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Portland stone

Portland stone is a limestone geological formation (formally named the Portland Stone Formation ) dating to the Tithonian age of the Late Jurassic that is quarried on the Isle of Portland in Dorset, England. The quarries are cut in beds of white-grey limestone separated by chert beds. It has been used extensively as a building stone throughout the British Isles, notably in major public buildings in London such as St Paul's Cathedral and Buckingham Palace. Portland stone is also exported to many countries, being used for example at the United Nations headquarters in New York City.

Geology
Portland stone formed in a marine environment, on the floor of a shallow, warm, sub-tropical sea probably near land (as evidenced by fossilized driftwood, which is not uncommon). When seawater is warmed by the sun, its capacity to hold dissolved gas is reduced; consequently, dissolved carbon dioxide (CO2) is released into the atmosphere as a gas. Calcium and bicarbonate ions within the water are then able to combine, to form calcium carbonate (CaCO3) as a precipitate. The process of limescale build up in a kettle in hard-water areas is similar. Calcium carbonate is the principal constituent of most limestones. Billions of minute crystals of precipitated calcium carbonate (called calcite) accumulated forming lime mud (called micrite) which covered the sea floor. Small particles of sand or organic detritus, such as shell fragments, formed a nucleus, which became coated with layers of calcite as they were rolled around in the muddy micrite. Portland stone measures 3.5 on the Mohs scale of mineral hardness.

The calcite gradually accumulated (by accretion) around the fragments of shell in concentric layers, forming small balls (of less than 0.5 mm diameter). This process is similar to the way in which a snowball grows in size as it is rolled around in the snow. Over time, countless billions of these balls, known as "ooids" or "ooliths" (from the Greek for "egg-shaped" or "egg-stone"), became partially cemented together (or lithified) by more calcite, to form the oolitic limestone that is called Portland stone. The degree of cementation in Portland stone is such that the stone is sufficiently well cemented to allow it to resist weathering, but not so well cemented that it cannot be readily worked (cut and carved) by masons. This is one of the reasons why Portland stone is so favoured as a monumental and architectural stone. Geoff Townson conducted three years doctoral research on the Portlandian, being the first to describe the patch-reef facies and Dorset-wide sedimentation details. Ian West of the School of Ocean and Earth Sciences at Southampton University completed a detailed geological survey of Withies Croft Quarry before the Portland Beds were quarried by Albion Stone plc.

History of use
Stone has been quarried on Portland since Roman times and was being shipped to London in the 14th century. Extraction as an industry began in the early 17th century, with shipments to London for Inigo Jones' Banqueting House. Wren's choice of Portland for the new St Paul's Cathedral was a great boost for the quarries and established Portland as London's choice of building stone. The island was connected by railway to the rest of the country from 1865. Albion Stone PLC has been quarrying and mining Portland stone since 1984. Portland Stone Firms Ltd have been quarrying Portland stone since 1994.

Quarries and mines
Jordans is part of the Inmosthay Quarry in the centre of the island, which also includes Fancy Beach. The quarry has been worked since the late 19th century. Albion Stone leases the southern section from The Crown Estate and purchased the northern part of the site in 2006. The majority of the southern reserves lie under the grounds of the local cricket club. To avoid disturbing the site at surface level, the company has applied and received permission to extract the stone using mining rather than quarrying techniques. The reserves to the north will be quarried using the diamond bladed cutting machines, hydro bags and wire saws to shape the blocks. This process avoids the use of dusty and noisy blasting as the primary extraction method, thereby protecting the surrounding environment, which has been designated as a Site of Special Scientific Interest (SSSI). Albion Stone PLC now extract all their stone through mining which dramatically reduces the impact on the environment and local residents. Jordan's Mine is currently the biggest mine on Portland. Bowers Quarry has been operational since the late 18th century. It has been leased from The Crown Estate since 1979, and in 2002 it became the site of the first Portland stone mine by Albion Stone PLC. Extraction from this site is now completely underground, with the original Bowers Mine in the extreme southern end of the quarry and the High Wall Extraction on the eastern and south east boundaries. High Wall Extraction is a series of small mines that extract otherwise wasted stone that sits between the final faces of the quarry and the actual boundary of the site.

Stonehills Mine is the first completely new mine on Portland (not a mine as an extension from an existing quarry). Albion Stone Plc began the process to open this mine in 2015 and reserves are estimated to last for 50 years (2066).

Independent Quarry and Admiralty Quarry are both owned by The Crown Estate and have been leased since 1982. These quarries have been worked since the mid-19th century with the final dimension stones coming out of Independent in 2006, although some stocks of Portland stone block still remain.

Coombefield Quarry, located near Southwell has been open cast quarried over the last 80 years and is one of three privately owned quarries by Portland Stone Firms Ltd, the largest landholder on the island. The quarry is nearing the end of its life and will be regenerated as a holiday caravan park to boost local tourism on the island.

Perryfield Quarry is found towards the middle of the island and being actively open cast quarried. There are over 20 years of reserves left which is privately owned by Portland Stone Firms. Open cast quarrying provides quicker extraction of raw block dimension stone whilst maintaining its integrity. The majority of buildings in London today use Portland which has been quarried using the same methods over the last 60 years.

Broadcroft Quarry is located on the eastern side of the island and is a part of the open cast quarries used for St Paul's Cathedral. Privately owned by Portland Stone Firms Limited there are over 20 years of reserves left and still being actively quarried.

The coastal strip toward the southern tip of the island has permission to be worked by Portland Stone Firms and will provide in excess of 30 years of reserves. Permission has been granted for this to be open cast quarried.

Once quarries have been worked they are then restored. The Portland Sculpture and Quarry Trust was formed in 1983 and is dedicated to preserving a knowledge and understanding of stone and the landscape from which it comes. The main non-working quarry remains Tout Quarry in which the trust is based, where a workshop is held every year. Tout Quarry has been donated to the Portland Sculpture and Quarry Trust by Portland Stone Firms Limited.

Quarrying methods
Traditionally small diameter holes (35 mm) were drilled horizontally under each rock and charged with a small quantity of gunpowder, chosen because of its relative non-shattering properties. When fired the gunpowder produced a "heave" which dislodged the rock from its natural bed, hopefully undamaged. Stone was cut using plugs and feathers, where a series of short, small diameter (typically 30 mm) holes are drilled in a line where a cut is to be made. One plug and two feathers were inserted into each hole and each plug is hit in turn with a sledgehammer until the stone yields to the extreme tensile stresses produced. Most stone is many times weaker in tension than in compression, plugs and feathers utilize this fact. It is also worth noting that stone tends to split much more easily parallel to bedding planes (called graining) than perpendicular to them (called cutting).

In 1999, Italian stone cutting equipment, originally designed for use in Tuscany's marble quarries was imported by Albion Stone and applied to the extraction of Portland stone. This new technology eliminated the need for blasting, significantly improved the quarries' environmental performance and removed the potential for any possible damage to the stone being quarried through shock. Full account of the local jointing pattern is made when deciding the position and orientation of cuts. Once the quarry faces have been cut, the stone is gently displaced hydraulically. This is done using "hydro-bags", which are thin, flat, steel bags or envelopes that when inflated with water under moderate pressure, are capable of producing the forces necessary to loosen the stone to the point where it can be easily removed using large wheeled loaders. Splitting stone, using pneumatic drills is arduous work and so wire-saws have been introduced into the quarries, replacing much of the plug and feather cutting.

Mining
Mining in Portland is done by using a room and pillar method. The mine is advanced by extracting the stone using an abrasive tool chain cutter mounted on a machine. Slots are cut into the top, bottom, sides and middle of the stone. A flat steel pillow is inserted into the middle cut and slowly inflated with water. The stones are gently broken off at the back without placing any stress on the resulting blocks. This method of extraction is significantly more expensive than blasting, but results in a higher yield thereby saving valuable reserves for future generations. The environmental benefits are substantial as mining significantly reduces the impact on wildlife and the local community with reduced noise and dust.

Portland stone buildings
Portland's freestone has almost certainly been used as a building material since Roman times. The many well crafted Roman sarcophagi (stone coffins and matching lids, hewn from single large blocks of Portland stone) that have been unearthed locally over the years, testify to the skill of their makers.

The earliest known building to be constructed using Portland stone is Rufus Castle at Church Ope Cove, Portland. The original structure was probably built around 1080, rebuilt around 1259 and rebuilt yet again around 1450, which is the likely date of the walls seen today. The first known Portland stone quarries were situated on the northeastern coast of the Isle, close to Rufus Castle, where huge landslips made the stone more easily accessible, and the proximity of the sea allowed the quarried stone blocks to be moved over relatively large distances by barge.

Portland stone was used to build the Palace of Westminster in 1347, the Tower of London in 1349 and the first stone London Bridge in 1350. Exeter Cathedral and Christchurch Priory, also constructed during the 14th Century, are built of Portland stone. Its superb characteristics have ensured a popularity amongst masons and architects that has endured ever since. The East side of Buckingham Palace, the official London residence of King Charles III, including the balcony, was faced with Portland stone, first in 1854 and again in 1913. The Victoria Memorial (unveiled 1911) is also made of it.

Inigo Jones (1573–1652) used Portland stone to build the Banqueting Hall in Whitehall in 1620. Sir Christopher Wren used nearly one million cubic feet to rebuild St. Paul's Cathedral and many other minor churches after the Great Fire of London in 1666.

All of the stone used by Wren was transported by sailing barge from Portland to the centre of London via the sea and then up the Thames. Wren's widespread use of Portland stone firmly established it as London's "local stone" and as one of the best-loved British building stones. Other famous London buildings constructed of Portland stone are The British Museum (1753) with the new WCEC extension in Portland Roach which was short-listed for the Stirling Prize in 2017, Somerset House (1792), the General Post Office (1829), the Bank of England, the Mansion House and the National Gallery. Tower Bridge is partly clad in Portland stone (along with Cornish granite). Portland stone was used in 1923 to build the supporting pillar of the Grace Gates at Lord's Cricket Ground.

Recently, Portland stone has been used in the building of Chelsea Barracks, Wilkins Terrace at UCL University College London, St James's Market Haymarket, London and Green Park tube station.

Portland stone is prevalent in Manchester despite the historical preferred use of hard-wearing materials, such as Burmantofts and sandstone to resist the harsh industrial environment. Portland stone was mostly used in Manchester during the 1930s. Manchester buildings with Portland stone exterior include 100 King Street (1935), Arkwright House (1937), St. James Buildings (1912), Manchester Central Library (1934), Kendal Milne (1939) and Sunlight House (1932).

Two of Liverpool's Three Graces, the Cunard Building and the Port of Liverpool Building, are clad in Portland stone which surrounds their reinforced concrete frames. The Nottingham Council House, completed in 1929, is also built with Portland stone, as are the public buildings in Cardiff's civic centre. Architect Charles Holden significantly used the stone in his major commissions of the 1920s and 1930s, including Senate House and 55 Broadway, the home of the London Underground. The 1929 steel framed building (one of the first erected in the United Kingdom) of the London School of Hygiene & Tropical Medicine, based in Keppel Street, has a Portland stone façade to complete its stripped Classical design. After the Second World War (1939–1945), the bombed out centres of many English towns and cities, such as Plymouth, Bristol, Coventry and London were reconstructed using vast facades of Portland stone.

Many of the buildings surrounding the flagship Parkinson Building at the University of Leeds are clad in Portland stone, including the Michael Sadler Building, the Chemistry and Engineering buildings and the new Laidlaw Library.

Oxford typically uses oolitic limestone in its buildings, and the Ashmolean Museum has been refurbished using a large amount of Portland stone.

Portland stone has also been used across the world. Examples include the UN building in New York, the Casino Kursaal in Belgium and the Auckland War Memorial Museum. Most of the important civic and administrative buildings which survive from 18th and 19th century Dublin, Ireland, known then as "the second city of the Empire", are of Portland stone, including City Hall (1779), the Houses of Parliament (1767), the Custom House (1791), the National Gallery (1864) and the General Post Office (1818). More recent projects include the BBC Broadcasting House in London, which won the "New Build (Modern Non-Load-bearing Stone) Award" in the 2006 Natural Stone Awards.

Portland stone has been designated by the International Union of Geological Sciences as a Global Heritage Stone Resource.

Memorials
Following the First World War, Sir Edwin Lutyens used Portland stone (quarried from the bottom of Wakeham) to construct the Cenotaph in London's Whitehall. Erected in 1920, The Cenotaph commemorates the millions of people killed in this and subsequent conflicts. The RAF Bomber Command Memorial in London's Green Park commemorates the 55,573 crew members of the RAF's Bomber Command who were killed between 1939 and 1945.

The gravestones for British personnel killed in the First and Second World Wars were made out of Portland stone. The Commonwealth War Graves Commission use Portland Limestone supplier Albion Stone's Portland Basebed.

Portland stone was used for the Armed Forces Memorial in Staffordshire, England. Designed by Liam O'Connor Architects and Planning Consultants, it was completed in 2007 at a cost of over £6 million and bears the names of over 16,000 service personnel of the British Armed Forces killed since the Second World War.

Substitution
Portland stone is recognised to be of a high quality, but is somewhat expensive. In the case of the refurbishment of the British Museum's central court, the planned Portland stone was controversially substituted with Anstrude Roche Claire stone from France, another similar (but cheaper) oolitic limestone.

Cement
The term, "Portland cement", was coined by Joseph Aspdin who in 1824 patented a hydraulic binder created by burning a mixture of limestone and clay, resembling the previously existing Roman cement and presenting a material which he hoped looked like the famous Portland building stone.

title: Portland stone


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Henry Beissel

Henry Eric Beissel (born 12 April 1929 Cologne) is a writer and editor who has published 24 volumes of poetry, six books of plays, a non-fiction book on Canada, two anthologies of plays intended for use in high schools, and numerous essays and pieces of short fiction.

Biography
Henry Beissel was born in Cologne, Germany, and survived the second World war as a youth. He came to Canada in 1951.

He first came to national attention with the controversial literary/political journal Edge (Edmonton 1963 – Montreal 1969).

Beissel's internationally successful Inuk and the Sun ("a mythic masterpiece", Sherrill Grace) premiered at the Stratford Festival of Canada in 1973. This was followed by a U.S. premiere in 1977 at The Other Theatre in Chicago's Bernard Horwich Jewish Community Center with a musical score by Douglas L. Lieberman. The Other Theatre also commissioned Under Coyote's Eye and performed it at the Field Museum of Natural History. Beissel's work has been translated into many languages.

Beissel had a long teaching career in English literature, and later in creative writing, which started as a teaching fellow at the University of Toronto. He taught at the University of Munich (1960–62), the University of Alberta (1962–64) and Concordia University (Montreal) (1966–96), from which he retired as distinguished emeritus professor of English.

He lives with his wife, Arlette Francière, in Ottawa.

Awards
Beissel has received several awards. The first was the Norma Epstein Award for Creative Writing in 1958 at University of Toronto, and the last was the Walter-Bauer Literaturpreis, Merseburg (Germany), 1994.

Selected bibliography

 * New Wings for Icarus. Toronto: Coach House, 1966.
 * A Different Sun (poems by Walter Bauer translated from the German). Ottawa: Oberon, 1976.
 * Inuk and the Sun. Toronto: Gage, 1980.
 * Under Coyote's Eye. Dunvegan, Ontario: Quadrant, 1980.
 * Improvisations for Mr. X & the Noose. Dunvegan, Ontario: Cormorant, 1989.
 * Kanada. Romantik und Wirklichkeit (with photographs by Janis Kraulis). Innsbruck: Pinguin Verlag, 1981.
 * Cantos North. Moonbeam, Ontario: Penumbra, 1982.
 * Season of Blood. Toronto: Mosaic, 1984.
 * A Thistle In His Mouth (poems by Peter Huchel translated from the German). Dunvegan, Ontario: Cormorant Books, 1987.
 * The Noose & Improvisations for Mister X. Dunvegan, Ontario: Cormorant, 1989.
 * Dying I was Born. Waterloo, Ontario: Penumbra, 1992.
 * Stones to Harvest. Gooderich, Ontario: Moonstone, 1993.
 * Across the Sun's Warp. Ottawa: BuschekBooks, 2003.

Plays

 * The Curve, University of Alberta, 1963
 * A Trumpet For Nap, Little Angel Theatre, London, England. 1970
 * Are You Afraid of Thieves?, Universite du Quebec, 1973, La Troupe Brin'si
 * Inook And The Sun, The Stratford Festival, Canada, 1973
 * For Crying Out Loud, Char-Lan Theatre Workshop, Williamstown, Ontario. 1975
 * Goya, Montreal Theatre Lab, 1976
 * Under Coyote's Eye, Other Theatre, Chicago, 1978
 * The Emigrants, Saidye Bronfman Centre, Montreal. 1981
 * Hedda Gabler, Saidye Bronfman Centre, Montreal. 1982 (translation)
 * ''The Noose, University of Winnipeg, 1985
 * The Glass Mountain, University of Winnipeg, Manitoba. 1990

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: Henry Beissel


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Qu You

Qu You (, 1341–1427 ), courtesy name Zongji (宗吉) and self-nicknamed Cunzhai (存齋, "Reading Studio of Existence"), was a Chinese novelist who lived in the Ming dynasty, and whose works inspired a new genre fantasy works with political subtext of the Qing dynasty.

Born in Qiantang (錢塘, now Hangzhou), Qu You was famous as an adolescent poet. He became a teacher-official (教諭) in Lin'an (臨安), then promoted to be the Head of Secretary (長史) of the Zhou (周) Kingdom. But at the height of his career, he became implicated in a dispute between the Hongwu Emperor and Zhu Su and was jailed in 1408.

After his release in 1425, he worked as a tutor in the household of Lord of Ying State (英國公). He was reinstated as an official, but he resigned shortly, never returning to the world of politics again, in action. His works, though entertaining, have undertone that expresses concerns and discontent that he had with the Zhu family and politics of the Ming dynasty.

Works

 * Records by the Trimmed Lamp (剪燈錄, Jiandeng Lu): 40 volumes
 * New Stories to Trim the Lamp By (剪燈新話, Jiandeng Xinhua): 4 volumes

title: Qu You


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Isle of Portland

The Isle of Portland is a tied island, 6 km long by 2.7 km wide, in the English Channel. The southern tip, Portland Bill, lies 8 km south of the resort of Weymouth, forming the southernmost point of the county of Dorset, England. A barrier beach called Chesil Beach joins Portland with mainland England. The A354 road passes down the Portland end of the beach and then over the Fleet Lagoon by bridge to the mainland. The population of Portland is 13,417.

Portland is a central part of the Jurassic Coast, a World Heritage Site on the Dorset and east Devon coast, important for its geology and landforms. Portland stone, a limestone famous for its use in British and world architecture, including St Paul's Cathedral and the United Nations Headquarters, continues to be quarried here.

Portland Harbour, in between Portland and Weymouth, is one of the largest man-made harbours in the world. The harbour was made by the building of stone breakwaters between 1848 and 1905. From its inception it was a Royal Navy base, and played prominent roles during the First and Second World Wars; ships of the Royal Navy and NATO countries worked up and exercised in its waters until 1995. The harbour is now a civilian port and popular recreation area, and was used for the 2012 Olympic Games.

The name Portland is used for one of the British Sea Areas, and has been exported as the name of North American and Australian towns.

History
Portland has been inhabited since at least the Mesolithic period (the Middle Stone Age)—there is archaeological evidence of Mesolithic inhabitants at the Culverwell Mesolithic Site, near Portland Bill, and of habitation since then. The Romans occupied Portland, reputedly calling it Vindelis.

Although the beginning of the Viking Age in England is dated to their raid in 793, when they destroyed the abbey on Lindisfarne, their first documented landing occurred in Portland four years earlier, in 789, as recorded in the Anglo-Saxon Chronicle. Three lost Viking ships from Hordaland (the district around Hardanger fjord in west Norway) landed at Portland Bill. The king's reeve tried to collect taxes from them, but they killed him and sailed on.

A castle on the site of the present Rufus Castle, standing over Church Ope Cove, may have been built for William II of England (also known as William Rufus) soon after the conquest of England by his father William the Conqueror. None of that castle remains; the existing castle probably dates from the 15th century.

In 1539 King Henry VIII ordered the construction of Portland Castle for defence against attacks by the French; the castle cost £4,964 (equivalent to £ in 2024). It is one of the best preserved castles from this period, and is opened to the public by the custodians English Heritage.

In the 17th century, chief architect and Surveyor-General to James I, Inigo Jones, surveyed the area and introduced the local Portland stone to London, using it in his Banqueting House, Whitehall, and for repairs on Old St Paul's Cathedral. His successor, Sir Christopher Wren, an architect and the Member of Parliament for nearby Weymouth, used six million tons of white Portland limestone to rebuild destroyed parts of the capital after the Great Fire of London of 1666. Well-known buildings in the capital, including St Paul's Cathedral and the eastern front of Buckingham Palace feature the stone. After the First World War, a quarry was opened by The Crown Estate to provide stone for the Cenotaph in Whitehall and half a million gravestones for war cemeteries, and after the Second World War hundreds of thousands of gravestones were hewn for soldiers who had fallen on the Western Front. Portland cement has nothing to do with Portland; it was so named due to its similar colour to Portland stone when mixed with lime and sand.

There have been railways in Portland since the early 19th century. The Merchant's Railway was the earliest—it opened in 1826 (one year after the Stockton and Darlington railway) and ran from the quarries at the north of Tophill to a pier at Castletown, from where the Portland stone was shipped around the country. The Weymouth and Portland Railway was laid in 1865, and ran from a station in Melcombe Regis, across the Fleet and along the low isthmus behind Chesil Beach to a station at Victoria Square in Chiswell. At the end of the 19th century the line was extended to the top of the island as the Easton and Church Ope Railway, running through Castletown and ascending the cliffs at East Weares, to loop back north to a station in Easton. The line closed to passengers in 1952, and the final goods train (and two passenger 'specials') ran in April 1965.

The Royal National Institution for the Preservation of Life from Shipwreck stationed a lifeboat at Portland in 1826, which was withdrawn in 1851. Coastal flooding has affected Portland's residents and transport for centuries—the only way off the island by land is along the causeway in the lee of Chesil Beach. At times of extreme floods (about every 10 years) this road link is cut by floods. The low-lying village of Chiswell used to flood on average every 5 years. Chesil Beach occasionally faces severe storms and massive waves, which have a fetch across the Atlantic Ocean. Following two severe flood events in the 1970s, Weymouth and Portland Borough Council and Wessex Water decided to investigate the structure of the beach, and coastal management schemes that could be built to protect Chiswell and the beach road. In the 1980s it was agreed that a scheme to provide storm protection with a 20% annual exceedance probability to reduce flood depth and duration in more severe storms. Hard engineering techniques were employed in the scheme, including a gabion running 550 m to the north of Chiswell, an extended sea wall in Chesil Cove, and a culvert running from inside the beach, underneath the beach road and into Portland Harbour, to divert flood water away from low-lying areas.

At the start of the First World War, HMS Hood was sunk in the passage between the southern breakwaters to protect the harbour from torpedo and submarine attack. Portland Harbour was formed (1848–1905) by the construction of breakwaters, but before that the natural anchorage had hosted ships of the Royal Navy for more than 500 years. It was "the home of the Asdics," a centre for Admiralty research into asdic submarine detection and underwater weapons from 1917 to 1998; the shore base HMS Serepta was renamed HMS Osprey in 1927. During the Second World War Portland was the target of 48 air raids and a total of 532 bombs, although most warships had moved north as Portland was within enemy striking range across the Channel. Mulberry Harbour Phoenix Units can be seen at Black Barge beach, near Portland Castle. Portland was a major embarkation point for Allied forces on D-Day in 1944. Early helicopters were stationed at Portland in 1946–1948, and in 1959 a shallow tidal flat, The Mere, was infilled, and sports fields taken to form a heliport. The station was formally commissioned as HMS Osprey, which then became the largest and busiest military helicopter station in Europe. The base was gradually improved with additional landing areas and one of England's shortest runways, at 229 m.

The naval base closed after the end of the Cold War in 1995, and the Royal Naval Air Station closed in 1999, although the runway remained in use for Her Majesty's Coastguard Search and Rescue flights as MRCC Portland until 2014. MRCC Portland's area of responsibility extended midway across the English Channel, and from Start Point in Devon to the Dorset/Hampshire border, covering an area of around 10400 km2. The 12 Search and Rescue teams in the Portland area dealt with almost 1000 incidents in 2005. Portland lends its name to one of the BBC's Shipping Forecast regions.

There are still two prisons on Portland: HMP The Verne, which until 1949 was a Victorian military fortress, and a Young Offenders' Institution (HMYOI) on the Grove clifftop. This was the original prison (HM Prison Portland) built for convicts who quarried stone for the Portland Breakwaters from 1848. For a few years until 2005 Britain's only prison ship, HMP The Weare, was berthed in the harbour.

Governance
Since the 2019 structural changes to local government, Portland is in the Dorset unitary authority, administered by Dorset Council. The whole island forms Portland ward which is one of the 52 wards and elects three members to the council.

Portland is an ancient royal manor, and until the 19th century remained a separate liberty within Dorset for administration purposes. It was then an urban district from 1894 to 1974. The borough of Weymouth and Portland formed on 1 April 1974 under the Local Government Act 1972 by merger of Portland urban district with the borough of Weymouth and Melcombe Regis. In 2020, the borough of Weymouth and Portland was abolished when Dorset moved to a unitary authority structure of local government.

Weymouth, Portland and the Purbeck district are in the South Dorset parliamentary constituency, created in 1885. The constituency elects one Member of Parliament; the current MP is Richard Drax (Conservative).

Weymouth and Portland have been twinned with the town of Holzwickede in North Rhine-Westphalia, Germany since 1986, and the French town of Louviers, in the department of Eure in Normandy, since 1959. The borough and nearby Chickerell have been a Fairtrade Zone since 2007.

Geography
The Isle of Portland lies in the English Channel, 3 km south of Wyke Regis, and 200 km west-southwest of London, at 50.55°N, -2.44°W (50.55, −2.44). Portland is situated approximately halfway along the UNESCO Jurassic Coast World Heritage Site; the site includes 153 km of the Dorset and east Devon coast that is important for its geology and landforms. The South West Coast Path runs around the coast; it is the United Kingdom's longest national trail at 1014 km. Portland is unusual as it is connected to the mainland at Abbotsbury by Chesil Beach, a tombolo which runs 29 km north-west to West Bay. Portland is sometimes defined incorrectly as a tombolo—in fact Portland is a tied island, and Chesil Beach is the tombolo (a spit joined to land at both ends).

There are eight settlements on Portland, the largest being Fortuneswell in Underhill and Easton on Tophill. Castletown and Chiswell are the other villages in Underhill, and Weston, Southwell, Wakeham and the Grove are on the Tophill plateau. Many old buildings are built out of Portland Stone; several parts have been designated Conservation Areas to preserve the unique character the older settlements which date back hundreds of years.

The Isle of Portland has been designated by Natural England as National Character Area 137. It is adjoined by the Weymouth Lowlands to the north.

Geology
Geologically, Portland is separated into two areas; the steeply sloping land at its north end called Underhill, and the larger, gently sloping land to the south, called Tophill. Portland stone lies under Tophill; the strata decline at a shallow angle of around 1.5 degrees, from a height of 151 m near the Verne in the north, to just above sea level at Portland Bill. The geology of Underhill is different to Tophill; Underhill lies on a steep escarpment composed of Portland Sand, lying above a thicker layer of Kimmeridge Clay, which extends to Chesil Beach and Portland Harbour. This Kimmeridge Clay has resulted in a series of landslides, forming West Weares and East Weares.

2.4 km underneath south Dorset lies a layer of Triassic rock salt, and Portland is one of four locations in the United Kingdom where the salt is thick enough to create stable cavities. Portland Gas applied to excavate 14 caverns to store 1000000000 m3 of natural gas, which is one per cent of the UK's total annual demand. It was proposed that the caverns should be connected to the National gas grid at Mappowder via a 37 km pipeline. Plans had it that the surface facilities should be complete to store the first gas in 2011, and the entire cavern space available for storage in winter 2013. As part of the £350 million scheme, the Grade II listed former Old Engine Shed would be converted into a £1.5 million educational centre with a café and an exhibition space about the geology of Portland.

Portland Bill

Portland Bill is the southern tip of the island of Portland. The Bill has three lighthouse towers. The Higher Lighthouse is now a dwelling and holiday apartments whilst the Lower Lighthouse is now a bird observatory and field centre providing records of bird migration and accommodation for visitors, which opened in 1961. The white and red lighthouse on Bill Point replaced the Higher and Lower Lighthouses in 1906. It is a prominent and much photographed feature; an important landmark for ships passing the headland and its tidal race. The current lighthouse was refurbished in 1996 and became remotely controlled. It now contains a visitors' centre giving information and guided tours of the lighthouse.

Portland Ledge and Portland Race
Portland Ledge is an underwater extension of Portland Stone into the English Channel at a place where the depth of Channel is 20 to 40 metres (about 10 to 20 fathoms). Tidal flow is disrupted by the feature; at 10 metres (about 5 fathoms) deep and 2.4 km long, it causes a tidal race to the south of Portland Bill, the so-called Portland Race. The current only stops for brief periods during the $12 1/2$-hour tidal cycle and can reach 4 m/s at the spring tide of 2 m.

Ecology
Due to its isolated coastal location, the Isle of Portland has an extensive range of flora and fauna; the coastline and disused quarries are designated as Sites of Special Scientific Interest. The Isle of Portland SSSI encompasses 352 ha, and includes 17 monitored features ranging from Jurassic fossils, calcareous grassland, rock sea-lavender and nationally scarce butterflies. Sea and migratory birds occupy the cliffs in different seasons, sometimes these include rare species which draw ornithologists from around the country. Rare visitors to the surrounding seas include dolphins, seals and basking sharks. Chesil Beach is one of only two sites in Britain where the scaly cricket can be found; unlike any other cricket it is wingless and does not sing or hop. Ten British Primitive goats were introduced to the East Weares part of the island to control scrub in 2007.

The comparatively warm and sunny climate allows species of plants to thrive which do not on the mainland. The limestone soil has low nutrient levels; hence smaller species of wild flowers and grasses are able to grow in the absence of larger species. Portland sea lavender can be found on the higher sea cliffs; unique to Portland, it is one of the United Kingdom's rarest plants. The wild flowers and plants make an excellent habitat for butterflies; over half of the British Isles' 57 butterfly species can be seen on Portland, including varieties that migrate from mainland Europe. Species live on Portland that are rare in the United Kingdom, including the limestone race of the silver-studded blue.

Climate
The mild seas which almost surround the tied island produce a temperate climate (Köppen climate classification Cfb) with a small variation in daily and annual temperatures. The average annual mean temperature from 1991 to 2020 was 11.5 C. The warmest month is August, which has an average temperature range of 14.8 to 19.5 C, and the coolest is February, which has a range of 4.7 to 8.4 C. Mean winter temperatures are amongst the highest in the British Isles, and by far warmer than the United Kingdom average. However, due to the island's proximity to the sea, summers are cooler than the national average, with temperatures rarely climbing to the extremes seen in in-land areas further north. As a result of its coastal extremity and mild winter minimum temperatures, Portland is suitable for plants with the Royal Horticultural Society's hardiness rating H2. Mean sea surface temperatures range from 7.0 °C in February to 17.2 °C in August; the annual mean is 11.8 °C.

The mild seas that surround Portland act to keep night-time temperatures above freezing, making air frost rare: on average 6.3 days per year — this is far below the United Kingdom's average annual total of 55.6 days of frost. Days with snow lying are equally rare: on average zero to five days per year; almost all winters have no more than one day with snow lying. It may snow or sleet in winter, yet it almost never settles on the ground—coastal areas in South West England such as Portland generally experience the mildest winters in the UK. Portland is less affected by the Atlantic storms that Devon and Cornwall experience. The growing season lasts for more than 310 days per year, and the borough is in Hardiness zone 9.

Weymouth and Portland, and the rest of the south coast, has the sunniest climate in the United Kingdom. Portland averaged 1822.6 hours of sunshine annually between 1991 and 2020, which is 42% of the maximum possible, and 36% above the United Kingdom average of 1402.7 hours. December is the cloudiest month (62.2 hours of sunshine), November the wettest (82.6 mm of rain) and July is the sunniest and driest month (237.4 hours of sunshine, 36.9 mm of rain). Sunshine totals in all months are well above the United Kingdom average, and monthly rainfall totals throughout the year are less than the UK average, particularly in summer; this summer minimum of rainfall is not experienced away from the south coast of England. The average annual rainfall of 672.3 mm is well below the UK average of 1163.0 mm.

Demography
The population of Portland in 2021 was 13,417; this figure has remained around twelve to thirteen thousand since the 1970s. In 2011 there were 6,312 dwellings in an area of 11.5 km2, with a population density of 1112 people per km2. The population is almost entirely native to the United Kingdom and 93.9 per cent of residents are of white British ethnicity, well above the England and Wales average of 80.5 per cent. The average price of a detached house on Portland in 2010 was £194,200; terraced houses are cheaper, at £149,727, and a flat or maisonette costs £110,500.

Crime rates are below average—there were 5.4 burglaries per 1000 households in 2009 and 2010; which is lower than South West England (7.6 per 1000) and significantly lower than England and Wales (11.6 per 1000). Unemployment levels are very low, at 1.9 per cent in July 2011, compared to the British average of 7.7 per cent. The most common religious identity in Weymouth and Portland is Christianity, at 61.0 per cent, which is slightly above the England and Wales average of 59.3 per cent. The next-largest sector is those with no religion, at 29.3 per cent, also slightly above the average of 25.1 per cent.

Transport
The A354 road is the only land access to Portland, via Ferry Bridge, connecting to Weymouth and to the wider road network at the A35 trunk road in Dorchester. It runs from Easton, splitting into a northbound section through Chiswell and a southbound section through Fortuneswell, then along Chesil Beach and across a bridge to the mainland in Wyke Regis. Formerly the Portland Branch Railway also crossed to the island. The corridor is now a traffic-free walking and cycle path.

Local buses are run by FirstGroup, with services to Weymouth. Weymouth is the hub for south Dorset bus routes, with services to Dorchester and local villages. Weymouth is connected to towns and villages along the Jurassic Coast by the Jurassic Coast Bus service, which runs for 142 km from Exeter to Poole, through Sidford, Beer, Seaton, Lyme Regis, Charmouth, Bridport, Abbotsbury, Weymouth, Wool, and Wareham. Trains run from Weymouth to London, Southampton, Bristol and Gloucester but ferries no longer transport passengers to the French port of St Malo and the Channel Islands of Guernsey and Jersey.

Education
St George's Community Primary School is located in Easton. The only other school on Portland is the Atlantic Academy, an all-through school for pupils aged 3 to 19 based at two different sites. Formerly known as the Isle of Portland Aldridge Community Academy, it formed in 2012 by merging four primary schools and one secondary school.

Some students commute to Weymouth or Dorchester to study A-Levels, or to attend other secondary schools nearby. Weymouth College in Melcombe Regis is the nearest further education college, which has around 7,500 students from south west England and overseas, about 1500 studying A-Level courses.

Sport and recreation
In 2000, the Weymouth and Portland National Sailing Academy was built in Osprey Quay in Underhill as a centre for sailing in the United Kingdom. Weymouth and Portland's waters were credited by the Royal Yachting Association as the best in Northern Europe. Weymouth and Portland regularly host local, national and international sailing events in their waters; these include the J/24 World Championships in 2005, trials for the 2004 Athens Olympics, the ISAF World Championship 2006, the BUSA Fleet Racing Championships, and the RYA Youth National Championships.

In 2005, the WPNSA was selected to host sailing events at the 2012 Olympic Games—mainly because the academy had recently been built, so no new venue would have to be provided. However, as part of the South West of England Regional Development Agency's plans to redevelop Osprey Quay, a new 600-berth marina and an extension with more on-site facilities were built. Construction was scheduled between October 2007 and the end of 2008, and with its completion and formal opening on 11 June 2009, the venue became the first of the 2012 Olympic Games to be completed.

Weymouth Bay and Portland Harbour are used for other water sports – the reliable wind is favourable for wind and kite-surfing. Chesil Beach and Portland Harbour are used regularly for angling, scuba diving to shipwrecks, snorkelling, canoeing, and swimming. The limestone cliffs and quarries are used for rock climbing; Portland has areas for bouldering and deep water soloing, however sport climbing with bolt protection is the most common style. Since June 2003 the South West Coast Path National Trail has included 21.3 km of coastal walking around the Isle of Portland, including following the A354 Portland Beach Road twice.

Isle of Portland has a Non-League football club Portland United F.C. who play at Grove Corner. They also have a youth set up called Portland United youth football Club.

Rabbits
Rabbits have long been associated with bad luck on Portland. Use of the name is still taboo—the creatures are often referred to as "underground mutton", "long-eared furry things" or just "bunnies". The origin of this superstition is obscure (there is no record of it before the 1920s) but it is believed to derive from quarry workers. They would see rabbits emerging from their burrows immediately before a rock fall and blame them for increasing the risk of dangerous, sometimes deadly, landslides. If a rabbit was seen in a quarry, the workers would go home for the day, until the safety of the area had been assured.

As of 2006, older Portland residents were said to be 'offended' (sometimes for the benefit of tourists) by the mention of rabbits; this superstition came to national attention in October 2005 when a special batch of advertisement posters were made for the Wallace and Gromit film, The Curse of the Were-Rabbit. Out of respect for local beliefs the adverts omitted the word 'rabbit' and replaced the film's title with the phrase "Something bunny is going on".

Literature
Thomas Hardy described Portland as "the peninsula carved by Time out of a single stone", and named it the Isle of Slingers and Isle of the Race in his Wessex novels; it was the main setting of The Well-Beloved (1897), and was featured in The Trumpet-Major (1880). The cottage that now houses Portland Museum was the inspiration for the heroine's house in The Well-Beloved. Portlanders were expert stone-throwers in the defence of their land, and Hardy's Isle of Slingers is heavily based on Portland; the Street of Wells representing Fortuneswell and The Beal Portland Bill. Hardy also called Portland the Gibraltar of the North, with reference to its similarities with Gibraltar; its physical geography, isolation, comparatively mild climate, and Underhill's winding streets.

A. E. Housman wrote of the place in his poem, "The Isle of Portland", from A Shropshire Lad.

Hilaire Belloc's book The Cruise of the "Nona" is about sailing near Portland, and the reflections it occasions. He describes Portland Race as "the master terror of our world", and says "... if you were to make a list of all the things which Portland Race has swallowed up, it would rival Orcus".

In Museums Without Walls, Jonathan Meades declares that "Portland is a bulky chunk of geological, social, topographical and demographic weirdness. It is the obverse of a beauty spot. 'Beauty' in this construction implies the picturesque. Portland is gloriously bereft of this quality. It is awesome. There is nothing pretty about it."

In The Warlord Chronicles (1995–97), Bernard Cornwell makes Portland the Isle of the Dead, a place of internal exile, where the causeway was guarded to keep the 'dead' (people suffering insanity) from crossing the Fleet and returning to the mainland. No historical evidence exists to support this idea.

The Portland Chronicles series of four children's books, set on and around Portland and Weymouth and written by local author Carol Hunt, draw on local history to explore a seventeenth century world of smuggling, witchcraft, piracy and local intrigue.

In the Louis L'Amour novel To the Far Blue Mountains the novel's main character, Barnabas Sackett, hides in Cave Hole at the Bill of Portland before meeting a sailing ship in an attempt to escape from England.

Pink Pippos of Portland, a children's storybook about nearby Chesil Beach was written by Portland author Sandra Fretwell.

Vernacular
Kimberlin: slang for any 'strangers' who live on the island but are not from the island.

Portland screw: fossil mollusc (Aptyxiella portlandica) with a long screw-like shell or its cast.

Notable people

 * Lead singer of rock band Art Brut, Eddie Argos
 * Edgar F. Codd (23 August 1923 – 18 April 2003), British computer scientist and inventor of the relational model for database management
 * Former Premier League referee Paul Durkin
 * Former Queensland, Australia, politician Pat Comben

title: Isle of Portland


text:
Six Flags (1961–2024)

Six Flags Entertainment Corporation, formerly Six Flags Theme Parks, Inc., was an American amusement park corporation, headquartered in Arlington, Texas. At its height, Six Flags owned more theme parks and waterparks than any other company: 42 properties in the United States, Canada, and Mexico, including theme parks, amusement parks, water parks, and a family entertainment center. In 2019, Six Flags properties hosted 32.8 million customers, the seventh-highest attendance in the world.

Founded in the 1960s and named for its first theme park, Six Flags Over Texas, the company was known first as Six Flags, Corp., and later Six Flags, Inc. The company maintained a corporate office in Midtown Manhattan, and headquarters in Arlington, Texas. On June 13, 2009, the corporation filed for Chapter 11 bankruptcy protection, which it exited after corporate restructuring on May 3, 2010.

On July 1, 2024, Six Flags merged with rival Cedar Fair in an $8 billion deal; the merged company, also called Six Flags and based in Charlotte, North Carolina, operates 51 properties, including 27 amusement parks, 15 water parks, and nine resorts.

Origin
In 1957, real estate businessman Angus G. Wynne and other investors created The Great Southwest Corporation, which in 1960 began building its first theme park in Arlington, Texas, between Dallas and Fort Worth. They named it Six Flags Over Texas, a reference to the six nations that have governed Texas: Spain, France, Mexico, the Republic of Texas, the United States of America, and the Confederate States of America. The park opened the following year for a short, 45-day season.

Six Flags Over Texas initially featured a Native American village, a gondola ride, a railroad, some Wild West shows, a stagecoach ride and "Skull Island", a pirate-themed adventure attraction. There was also "LaSalle's River Adventure", inspired by the late-1600s La Salle Expeditions, that carried customers on French riverboats through a wilderness of animated puppets. Over the years, all of those attractions, except the railroad, were replaced by others, such as roller coasters, swing rides, log flumes and shoot-the-chute rides, as well as an observation tower.

Growth and acquisitions
In 1964, Angus Wynne's uncle Toddie Lee Wynne announced he would sell his stake in the Great Southwest Corporation, a sale valued around $6 million. The Pennsylvania Railroad purchased 500,000 shares of the company, a controlling interest, as part of its effort to diversify its revenue sources.

The railroad merged with the New York Central Railroad to form Penn Central in 1968 and went bankrupt two years later; still it bankrolled geographic expansion and additions for its Six Flags parks. The company opened Six Flags Over Georgia in 1967 and Six Flags Over Mid-America in 1971. Those were the last two parks built by Six Flags, which continued to grow by acquiring independent parks. Six Flags purchased AstroWorld in Houston, Texas, in 1975; Great Adventure in Jackson, New Jersey, in 1977; and Magic Mountain in Valencia, California, in 1979.

In 1982, Penn Central—which had sold its railroad assets to Conrail and now consisted largely of its diversified sub-firms—sold the company to Bally Manufacturing.

In 1984, Six Flags bought the Great America theme park in Gurnee, Illinois, from the Marriott hotel chain. That deal also included the rights to use Warner Bros.' Looney Tunes animated characters in Six Flags properties.

In 1987, Bally surrendered control of the chain to Wesray Capital Corporation in a 1987 leveraged buyout. Time Warner quickly began to gain more company stock, gaining a 19.5% stake in Six Flags in 1990 and then 50% in 1991, with the remaining shares of the company being split by Blackstone Group and Wertheim Schroder & Company. Time Warner purchased the remaining stake in Six Flags in 1993, changing the company's name from Six Flags Corp. to Six Flags Theme Parks, Inc. In 1995, to reduce its debt, Time Warner sold 51% of Six Flags for $200 million in cash to an investment group led by Boston Ventures, shifting $800 million in debt to Six Flags.

In 1996, Six Flags began to manage Fiesta Texas theme park in San Antonio, Texas, with a ten-year option to buy, and purchased the park (as Premier) from USAA in 1998.

Acquisition by Premier Parks
On April 1, 1998, Time Warner Entertainment sold Six Flags Theme Parks, Inc., to Premier Parks for $1.86 billion.

Premier Parks had originally operated as the Tierco Group, Inc., an Oklahoma-based real estate company. The company purchased the Frontier City theme park in Oklahoma City in 1982 for $1.2 million, although Tierco had no intention of entering the amusement park business. Company officials described Frontier City as "beat up" and "run down"; they planned to demolish it, subdivide the land and build a shopping center. An oil bust in Oklahoma scuttled those plans. In 1984, Tierco hired Gary Story as general manager of Frontier City and spent about $13 million to improve the park. As the new head of Frontier City, he quadrupled the park's attendance and revenues. Under his leadership, two rides, a ticket booth, sales office, and a petting zoo were added to the park. Food service improved.

In 1988, Tierco shifted its strategic direction to amusement parks. It sold much of its property and plowed the money into Frontier City. By 1991, Tierco opened White Water waterpark in Oklahoma City (later renamed Six Flags Hurricane Harbor Oklahoma City). The company realized the key to boosting a park's attendance was to add new and exciting rides and make it family-friendly.

In 1992, Tierco acquired the financially troubled Wild World in Largo, Maryland, and spent $500,000 to expand Wild World's kiddie section and remodel its buildings to give the park a tropical look and feel. The park's name was changed to Adventure World. Story was promoted to executive vice president after the purchase of Wild World. In 1994, he was promoted again to president and chief operating officer (COO). More flat rides and two roller coasters were added to that park.

In 1994, Tierco changed its name to Premier Parks, Inc., under Kieran E. Burke, chairman and chief executive officer.

In the second half of the 1990s, Premier picked up speed. In 1995, the company acquired these Funtime, Inc. properties: Geauga Lake near Cleveland, Ohio, Wyandot Lake in Powell, Ohio and Darien Lake near Buffalo, New York. In 1996, Premier bought Elitch Gardens in Denver, Colorado, the Waterworld USA waterparks in Sacramento and Concord, California, Riverside Park in Agawam, Massachusetts, and Great Escape and Splashwater Kingdom in Queensbury, New York.

Geauga Lake, Wyandot Lake and Adventure World included water parks, while Frontier City was 14.8 miles away from White Water Bay that required separate admission. Riverside added one just before being sold. In 1995 and 1996, Premier Parks added water parks to Darien Lake, Lake Compounce (immediately before the Kennywood sale), Elitch Gardens, and Great Escape.

Premier went public in 1996 and raised nearly $70 million through an initial offering at $18 per share. The company planned to use the money to expand its ten parks and acquire others. On November 7, 1997, Premier bought Kentucky Kingdom in Louisville for $64 million. Also that year, the company purchased Marine World near San Francisco. A second public offering, at $29 per share, raised an additional $2 million. In December 1997, Premier entered a definitive agreement to purchase a controlling 94 percent interest in Walibi Family Parks in Europe. The deal was finalized in March 1998 adding five Walibi Parks and Bellewaerde to the chain. In 1997, almost 11 million people visited parks owned by Premier.

After Premier bought Six Flags in 1998, it began to apply the Six Flags name to several of its smaller parks: Darien Lake, Elitch Gardens, Kentucky Kingdom and Marine World. Adventure World was rebranded as Six Flags America.

In 1999, Premier Parks purchased Warner Bros. Movie World Germany and the yet-to-be-built Warner Bros. Movie World Madrid from Warner Bros. As part of the acquisition, Premier Parks had the opportunity to open more European theme parks with Warner Bros. Movie World branding. Warner Bros. Movie World on the Gold Coast, Australia was not part of the deal. The same transaction saw Premier Parks obtain exclusive rights for Warner Bros. licensing in Europe and Latin America, in addition to their existing rights for the United States and Canada. In March 1999, Premier Parks purchased Reino Aventura for an estimated $59 million.

In 2000, Premier Parks assumed the Six Flags Theme Parks, Inc. name and continued re-branding its parks, including Geauga Lake park into Six Flags Ohio and Riverside Park to Six Flags New England. The company also rebranded one of the recently acquired Walibi parks — Walibi Flevo as Six Flags Holland, and Mexico's Reino Aventura as Six Flags Mexico.

In 2001, Six Flags acquired the former SeaWorld Ohio from Anheuser-Busch, merged it with the adjacent Six Flags Ohio and re-branded the combined park as Six Flags Worlds of Adventure. The park was positioned to compete against northern Ohio's Cedar Point. In May 2001, Six Flags negotiated with the city of Montreal to operate La Ronde in Montreal, Quebec, Canada. Six Flags acquired the assets of the park and has a long-term contract to lease the land from the city. Walibi Wavre was rebranded as Six Flags Belgium. In 2002, Six Flags acquired New Orleans' Jazzland amusement park from Alfa Smartparks for $22 million.

Asset sales and shareholder revolt

In 2004, Six Flags closed and sold properties to reduce the company's growing debt. On March 10, Six Flags sold its European parks—except the Movie World park in Madrid, Spain—to Star Parks, a division of Palamon Capital Partners. The Madrid park was sold to Time Warner and renamed "Parque Warner Madrid". In April, Six Flags determined that it would cost too much to keep Worlds of Adventure competitive with Cedar Point in Ohio, and so sold the park to Cedar Fair. All Looney Tunes and DC Comics character branding was removed upon sale to Cedar Fair, which lacked the licensing rights to the franchises. These sales raised $345 million.

In 2005, Six Flags endured even more turmoil. Some of the company's largest investors, notably Bill Gates's Cascade Investments (which then owned about 11% of Six Flags) and Daniel Snyder's Red Zone, LLC (which owned 12%), demanded change. On August 17, 2005, Red Zone began a proxy battle to gain control of Six Flags' board of directors. On August 29, 2005, Six Flags New Orleans (which was acquired by Six Flags in 2002) was severely damaged by Hurricane Katrina, and has since sat abandoned.

On September 12, Six Flags Chief Executive Officer Kieran Burke announced that Six Flags AstroWorld would be closed and demolished at the end of the 2005 season. The company cited issues such as the park's performance, and parking issues involving the Houston Texans football team, Reliant Stadium, and the Houston Livestock Show and Rodeo, leveraged with the estimated value of the property which included the park. Company executives were expecting to receive upwards of $150 million for the real estate but ended up receiving $77 million when the bare property (which cost $20 million to clear) was sold to a development corporation in 2006.

On November 22, 2005, Red Zone announced it had gained control of the board. Kieran Burke was removed on December 14 and was replaced by former executive vice president of ESPN programming and Red Zone CEO Mark Shapiro. Six Flags then named former Representative Jack Kemp, Miramax co-founder Harvey Weinstein and former president of the Interpublic Group of Companies Incorporated Michael Kassan, to their new board of directors.

Even with the new management team, the sell-off would continue into 2006. On January 27, Six Flags announced the sale of Frontier City and White Water Bay after the 2006 operating season. At the same time, Six Flags announced it would close corporate offices in Oklahoma City, moving its headquarters to New York City. Six Flags CEO Mark Shapiro said he expected the parks to continue operation after the sale, a lesson the company learned after its public relations debacle with the closure of AstroWorld. In June, Six Flags announced it was considering closing or selling up to six of its parks, including Elitch Gardens, Darien Lake, WaterWorld in Concord, California, Wild Waves and Enchanted Village in Federal Way, Washington, Splashtown in Houston, Texas and, most notably, Six Flags Magic Mountain. In addition, Six Flags announced the sale of Wyandot Lake in Powell, Ohio to the neighboring Columbus Zoo and Aquarium. Ultimately, Six Flags Magic Mountain was spared, with the remaining six parks sold on January 11, 2007, to CNL Lifestyle Properties for $312 million: $275 million cash and a note for $37 million.

Bankruptcy
The company's cash flow had decreased by over $120 million annually during the Shapiro years. In October 2008, Six Flags was warned its stock value had fallen below the required minimums to remain listed on the New York Stock Exchange. With the financial crisis of 2007–2008 weighing both on consumer spending and the ability to access credit facilities, Six Flags was believed to be unable to make a payment to preferred stockholders due in August 2009. Management saw the business as a sound one, noting that attendance across the company's parks increased slightly in 2008 compared to 2007. Six Flags CEO Mark Shapiro said that the company's problem was the declining attendance and cash flow created by his new management initiatives. If not resolved, the company warned in its 2008 annual report that the situation might require a Chapter 11 bankruptcy filing, with Six Flags already retaining counsel should that occur. The company stated at the time that it expected business to continue as normal in the event of such a filing, although one analyst believed attendance at the company's parks would decrease by six percent, suggesting parents would be leery of letting their children ride a roller coaster operated by a bankrupt company. In April 2009, the New York Stock Exchange announced it would delist Six Flags' stock on April 20, a decision that the company did not intend to appeal. On June 1, 2009, Six Flags announced it would delay its $15 million debt payment further using a 30-day grace period. Less than two weeks later, on June 13, the firm filed for Chapter 11 bankruptcy protection, but issued a statement that the parks would continue to operate normally while the company restructured. On August 21, 2009, Six Flags' Chapter 11 restructuring plan was announced in which lenders would control 92% of the company in exchange for canceling $1.13 billion in debt.

One component of the restructuring was negotiating a new lease agreement with the Kentucky State Fair Board, which owned much of the land and attractions for Six Flags Kentucky Kingdom. Six Flags had asked to forgo rent payments for the remaining nine years of its current lease agreement in exchange for profit-sharing from the park's operations. When it appeared that the offer had been rejected, Six Flags announced in February 2010 that it would not re-open the park. However, the Kentucky State Fair Board stated at the time that they were still open to negotiating a revised lease agreement. The park later reopened under different management.

On April 28, 2010, the company's bondholders reached an agreement on a reorganization plan. Junior note holders, including hedge funds Stark Investments and Pentwater Capital Management, assumed control of the company, while senior note holders were paid in cash. Despite objections from some parties who stood to gain nothing, the bankruptcy judge approved the plan on April 30, 2010. As part of the settlement, chairman of the board Dan Snyder was removed, while chief executive officer Mark Shapiro briefly remained in his post.

Emergence from bankruptcy
Six Flags officially emerged from bankruptcy protection as Six Flags Entertainment Corp. on May 3, 2010, and announced plans to issue new stock on the New York Stock Exchange. Amid suspected disagreements regarding the future of the company with the board, Shapiro left the company and Al Weber, Jr. was brought in as interim president and CEO. The company announced that several corporate positions as well as the corporate headquarters would be relocated from New York City to Grand Prairie, Texas. The building that served as the new headquarters, was located in the Great Southwest Industrial District and was a converted warehouse that had been in use by Six Flags for office space as well as a corporate operations center. Six Flags kept a portion of the Midtown Manhattan office and currently maintains a presence in New York City at that same location.

Post-bankruptcy
Six Flags announced that Jim Reid-Anderson would replace Weber and become chairman, president and chief executive officer (CEO) on August 13, 2010. John Duffey also joined the company in 2010, taking the role of chief financial officer (CFO). As of October 1, 2012, Al Weber, Jr. had retired as chief operating officer (COO) with no immediate successor.

On April 10, 2014, Six Flags announced a strategic partnership with Meraas Leisure and Entertainment (now known as DXB Entertainments) to build a Six Flags-branded theme park in Dubai, reviving the project. On June 23, 2014, Six Flags also announced a strategic partnership with Riverside Investment Group to build multiple Six Flags-branded theme parks in China over the decade.

On February 18, 2016, Six Flags announced that Jim Reid-Anderson had been promoted as executive chairman and John M. Duffey succeeded him as president and CEO. On January 11, 2016, Six Flags announced Six Flags Zhejiang, then named Six Flags Haiyan, in China. On the same day, a website was created along with concept art for the property. A month later on February 2, 2016. Six Flags announced Six Flags Hurricane Harbor Oaxtepec. The water park, originally named Parque Acuatico Oaxtepec, is a 76-acre park located in Morelos, Mexico that went bankrupt in 2011. On March 21, 2016, Six Flags announced a partnership with NaVi Entertainment to build a Six Flags-branded theme park and a Six Flags Hurricane Harbor-branded water park in Vietnam. On March 29, 2016, Six Flags announced the revival of its previously canceled Six Flags Dubai. As part of the second phase of the Dubai Parks and Resorts project in Jebel Ali, the park was expected to open in 2019. On July 20, 2016, Six Flags announced an agreement with Riverside Investment Group Co. Ltd. for the development of a second Six Flags-branded theme park in China together with a water park. The two parks will be located in Bishan District, a district of Chongqing.

On April 27, 2017, the company announced it would take over operations of Waterworld California in Concord, California, making it Six Flags' 20th property. On July 18, 2017, Six Flags announced that president and CEO John M. Duffey had retired from the company and Jim Reid-Anderson had re-assumed the roles of chairman, president and CEO.

On March 22, 2018, Six Flags and Riverside Group announced a partnership with Turner Asia Pacific to bring Tuzki and other Turner-owned IPs to its theme parks in China. On May 22, 2018, Six Flags announced the purchase of operating leases for five parks owned by EPR Properties. The parks are Darien Lake, Frontier City, Wet'n'Wild Phoenix, Wet'n'Wild SplashTown and White Water Bay. On October 9, 2018, Six Flags and Rockford Park District announced a lease agreement allowing Six Flags to operate Magic Waters Waterpark beginning Spring 2019. On October 24, 2018, Six Flags announced that the future of its Six Flags Dubai theme park was "uncertain" following losses at the company and its partner DXB Entertainments.

On April 24, 2019, DXB Entertainments canceled Six Flags Dubai, stating that the development and establishment of a Six Flags theme park was not in the best interest of the company or its shareholders. Plans were made to direct the available proceeds to enhance the existing theme parks of Motiongate and Bollywood Parks. On October 2, 2019, Reuters reported that Six Flags Entertainment Corporation had approached competitor Cedar Fair with an acquisition offer. Sources said that Cedar Fair was considering Six Flags' cash-and-stock offer, but there was no certainty that a deal would be reached. On October 4, 2019, Cedar Fair rejected Six Flags' offer to purchase. On October 24, 2019, Six Flags Entertainment Corporation announced that Jim Reid-Anderson would retire and Mike Spanos would be president and CEO of the company on November 18, 2019.

On January 10, 2020, Six Flags indicated that its projects in China have not progressed as expected and could be canceled due to debt problems with its partner Riverside Investment Group. In January 2020, Six Flags finalized plans to move its corporate headquarters to the Centerfield Office Building at Globe Life Park in Arlington, Texas. The offices were remodeled over the summer and Six Flags personnel moved in during the last few months of the year. On March 13, 2020, with only a few parks already opened for the 2020 season, Six Flags announced that all its properties would suspend operations due to the COVID-19 pandemic. During the closure, parks donated supplies and food to their local communities.

As of August 2020, some Six Flags operations were still suspended. On May 13, Six Flags announced that when the parks reopen guests will be required to reserve their place online to enter the park, including purchasing their tickets to the park and parking. Six Flags Great Adventure opened its drive-through safari to the public on May 30. Frontier City became the first park of the company to reopen on June 5, with new health and safety protocols. Soon after Frontier City's announcement, several other parks in the company announced their reopening dates. Starting on February 19, 2021, Six Flags had started gradually re-opening their amusement parks to the public for the upcoming season due to reduced COVID-19 restrictions, and by May of that year, all parks had successfully re-opened to the public.

On March 22, 2021, Six Flags announced that Six Flags Great America's Hurricane Harbor park would be converted into a separate park, becoming Six Flags Hurricane Harbor Chicago. Since its opening in 2005, the park was a part of Great America, but in recent years had started charging a one-day ticket upgrade to access the park. The change into a separate park meant that Hurricane Harbor Chicago would become the 27th Six Flags park in the chain. On November 15, 2021, Six Flags Entertainment Corporation announced that Mike Spanos had stepped down and Selim Bassoul, the former chairman of the board, would become president and CEO of the company effective immediately. Ben Baldanza, a former airlines industry executive, was elected to replace Bassoul as the chairman of the board.

Merger with Cedar Fair
On November 2, 2023, Cedar Fair and Six Flags Entertainment Corporation announced that they would merge; the combined company, worth an estimated $8 billion, will become the largest regional amusement park company in the world. Described as a "merger of equals", the combined company will have 27 amusement parks, 15 water parks, and 9 resort properties in its portfolio, and it will operate under the Six Flags name. Despite the name, Cedar Fair will be the majority owners, with unitholders owning a 51% stake in the new company. President and CEO of Cedar Fair, Richard Zimmerman, will serve as President and CEO of the new combined company, while Selim Bassoul, President and CEO of Six Flags, will become the executive chairman of the company's board of directors. The combined company's new headquarters will be located in Charlotte, North Carolina, with significant administrative and finance operations being located at Cedar Fair's former headquarters in Sandusky, Ohio. The merger was completed on July 1, 2024.

TV commercials
In June 2003, Ackerman McQueen, who'd been handling advertising for Six Flags since 1994, lost the account to the Doner Company.

In 2004, although DC Comics and Looney Tunes as well as Scooby-Doo still had a major presence at the parks, Six Flags began a new series of commercials for the parks. The commercials introduced a new mascot, conceived by the Doner Company, "Mr. Six", a seemingly feeble old man in a tuxedo and red bow tie. In many of the commercials, Mr. Six would slowly exit a multi-colored bus, only to start frenetically dancing to the Vengaboys' "We Like to Party". The commercials were an immediate hit and Mr. Six almost instantly became the de facto mascot, and his presence was felt for years after the character was retired. These ads have become widely parodied on the Internet, with faces from other Internet memes being superimposed over Mr. Six's face.

From 2008 to 2010, Six Flags' TV ads consisted of a "Fun-O-Meter" in which the beginning of the ad showed something boring or embarrassing and a man's face judges it "One Flag!" or sometimes "Oh! Two Flags!". Then roller coasters and attractions of Six Flags are shown and says "Six Flags! More Flags, More Fun!" for Six Flags parks. However, the thick accent of the Asian man in the original commercials had drawn criticism for being an offensive caricature. In 2009, the Mr. Six character came back from retirement and replaced the Asian man in Six Flags' ads, still using the Fun-O-Meter. In 2011, Six Flags' TV ads got a brand-new slogan "Go Big! Go Six Flags!" for its theme parks.

As part of Six Flags' effort to reopen theme parks in 2021 following the COVID-19 pandemic, Six Flags brought in a new slogan for both its social media and TV ads, "The Thrill is Calling".

Licensing with other brands and companies
Six Flags has licensed its name and its theme park creations to other companies, who have used these assets to create licensed products. One notable example is the theme park simulation game Roller Coaster Tycoon 2, which featured recreations of Six Flags parks and rides that could be expanded and operated at the player's discretion.

Six Flags has approximately 24 known current and past partners. These partners include Dole, Armitron, Mike and Ike, Barcel, Good Humor, Nathan's Famous, Coca-Cola, Icee, Ortega, Cold Stone Creamery, J&J Snack Foods, Red Gold, Coppertone, Johnny Rockets, Samsung, Dasani, Mars and Tyson Foods. These businesses help the park generate more income. Most importantly, it provides more jobs for prospective employees. For example, Barcel USA expanded its partnership in 2013. This helps to import food and beverages to increase sponsorships within the United States.

In 2008, Six Flags partnered with Brash Entertainment to create a video game based on the Six Flags parks named Six Flags Fun Park. The game was first released on the Nintendo DS on October 28, 2008. The Wii version was delayed while the PC and PlayStation 2 versions were canceled after Brash Entertainment went out of business. On February 24, 2009, the rights to the Wii version were taken over by Ubisoft, who released it on March 3, 2009. The game allows players to explore the themed areas and mini-games representative of a visit to a Six Flags park. In the game, players are tasked with quests that encourage them to explore the park's universe. After creating a unique custom character, Six Flags Fun Park patrons can win prizes and compete with other players in 40 mini-games. Although the video game is called Six Flags Fun Park, it lacks any major reference of Six Flags outside of the names of the different areas. This caused some to speculate that the video game was created separately, then the rights to the name of the game were sold as a way to pay for the game's development. The game was released as simply Fun Park and Fun Park Party in Europe on the DS and Wii respectively. When the game was released, it eventually ended up getting abysmal ratings across the board. IGN gave the Wii version a 4.5 out of 10, saying "The quests are uninteresting and the game's '40 Thrilling Games' (as touted by the box) are far from entertaining."

In late 2010, Six Flags began the process of removing non-Warner Bros. licensed theming from attractions. They terminated licenses with Thomas the Tank Engine, The Wiggles, Tony Hawk, Evel Knievel, and Terminator. However, since then there has been an expansion of licensing agreements with Warner Bros., with whom the company has had a long-standing relationship. The expansion lies specifically with Warner Bros.' DC Comics brand, where the two teamed up to create Justice League: Battle for Metropolis as well as many other roller coasters and other rides.

On May 18, 2017, Six Flags and Riverside Group signed an agreement with Paws, Inc. to use Garfield in children's areas in Six Flags-branded theme parks in China.

Other assets
On June 19, 2007, Six Flags announced it had purchased 40% of Dick Clark Productions, which owns rights to American Bandstand and other shows and productions. On September 28, 2012, Six Flags sold its stake in Dick Clark Productions. Additionally, Six Flags owns many other shares in various companies, like Nestle, Google, Mars Candy, and Coca-Cola.

Former and abandoned properties
These properties are listed in alphabetical order by the final name of the park while under Six Flags (or Cedar Fair) control.

Europe
These parks were all sold to StarParks in 2004, unless noted.

The Flash Pass
The Flash Pass is an optional, pay-per-person virtual queue system offered at Six Flags amusement parks. The system, named after DC Comics character The Flash, allows guests to reserve places in line at participating attractions, and access must be purchased for a nominal fee in addition to the general park admission price. The first iteration, called Q-bot, was designed by Lo-Q and was first implemented at Six Flags Over Georgia in 2001. Guests are given handheld devices, which are then used to make reservations and receive notifications when it is their turn to ride. Another iteration is where guests can scan a QR code on in-park signs or through the mobile app, and guests can buy individual Flash Passes per ride or use their season pass or membership Flash Pass. This feature was adopted in 2021.

A water park version of the virtual system called Q-band was first tested at Six Flags White Water in 2011. Guests wear waterproof RFID wristbands that can be scanned at kiosks near participating water park attractions.

title: Six Flags (1961–2024)