One Canada Square  aircraft warning light  HVAC (climate control) system One Canada Square (also known as the Canary Wharf Tower) is a  electrical equipment skyscraper in Canary Wharf, London. It is the tallest building in the United The maintenance floor above the lobby houses the air systems for the tower. Kingdom at 244 meters above sea level, or 235 meters above ground level. It is It also houses the spare parts store, containing many spare parts, including the seventh tallest building in the European Union, and the eleventh tallest many different window panes; marble for the lobby; spare electrical building in Europe. equipment; emergency pumps. The tower can be seen approximately 30 miles (50 km) away from the The ground floor, foyer area and basement levels of One Canada Square are following notable observation places: open to the general public, having an underground shopping area and a  Gore Hill, Amersham, around 28 miles (45 km) away transport interchange from Canary Wharf tube and Docklands Light Railway  ZSL Whipsnade Zoo in Bedfordshire is over 32 miles (51 km) away stations. Access from the basement also links to Canada Square shopping mall.  Guildford, around 31 miles (50 km) away The floors above the lobby are not opened to the public as they contain Olympia & York was the original developers for One Canada Square. They offices. The stained glass and the roundel in the foyer were designed by chose several architects whom were Cesar Pelli & Associates, Adamson Charles Rennie, and are an original design. The design represents Canary Associates, and Frederick Gibberd Coombes & Partners. After much design Wharf, Water and Boats, illustrating the signs of London Docklands. The slate consultation, the final design was reached in 1988. used here and in various places around the foyer on site is made from the Construction on the tower began in 1988. The tower was topped out on 11th Welsh slate shelving used in the repositories of the original Banana Warehouse August 1990 when the top piece of the pyramid roof was put in place by crane. at Canary Wharf. In August 1991, One Canada Square was completed and open for business. Despite its status as the United Kingdom's tallest building, there is currently In May 1992, the original developers, Olympia & York, went into no public observation floor. However, there was an exception during 12 bankruptcy administration. Ownership of the tower has changed several times September 1992 - 10 November 1992, when bankruptcy administrators for ever since. Olympia & York Canary Wharf Limited opened the 50th floor to the public, in The official name given to the building is 'One Canada Square'. However it is order to maintain interest in Canary Wharf. The scheme was stopped on 10 widely known to Londoners as the 'Canary Wharf Tower'. November 1992 when the IRA attempted to bomb the tower. The height of One Canada Square has been stated differently from many One Canada Square was 'named and shamed' for being the top building to sources. The official source, Canary Wharf Group, state that the building is 800 leave the lights on unnecessarily. The research carried out by the BBC Inside feet (244 metres) This is in close agreement with aviation charts issued by the Out team found that on midnight Sunday, One Canada Square left more lights Civil Aviation Authority which show it as 771 feet above ground level, or 806 on than any other building in London. feet above sea level (244m). Aviation maps show the tallest extreme of the However, Canary Wharf Group did say that some tenants have staff working building, irrespective of whether this is an antenna, flagpole, sign or occupied around the clock, and 100% of the energy comes from renewable resources. floor. Perhaps due to superstition, there is no space available for rent on the  The pyramid roof lights up in the evenings and can be seen 20 miles thirteenth floor and instead the floors are numbered 11, 12, 14, 15. Lifts away. travelling between the ground floor and 16th floor have a blank button for what  40 metres high should be the 13th floor. People claim that using the fire escape stairs reveals  30 metres square at the base that the floors go straight from the 12th floor to the 14th floor with no space for  made from stainless steel an extra floor in between. They say that there are no observable signs of an The pyramid roof contains a maintenance plant. Inside there are: extra floor from within the building or from outside.  water pumped up for general water requirements  window washing machines From Wikipedia Free encyclopedia.