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London Olympics Aquatics Centre (2005–2011)

Hadid described her Aquatics Centre for the 2012 Summer Olympics in London as "inspired by the fluid geometry of water in movement". The building covers three swimming pools, and seats 17,500 spectators at the two main pools. The roof, made of steel and aluminium and covered with wood on the inside, rests on just three supports; it is in the form of a parabolic arch that dips in the centre, with the two pools at either end. The seats are placed in bays beside the curving and outward-leaning walls of glass. At £269 million, the complex cost three times the original estimate, owing principally to the complexity of the roof. This was the subject of much comment when it was constructed, and it was the first 2012 Olympic building begun but the last to be finished. It was praised by architecture critics. Rowan Moore of The Guardian said that the roof "floats and undulates" and called the centre "the Olympics' most majestic space".