杭州奥体中心游泳馆

The Hangzhou Olympic Sports Centre Aquatics Centre stands at 2657 Bo'ao Road in Xiaoshan District, inside the Olympic Sports Expo City on the south bank of the Qiantang River. It is built as one structure with the neighbouring gymnasium, the pair known as the Butterfly: the two halls share a streamlined volume and a double-layer, fully clad silver-white metal roof, with platforms spreading like wings, and the wing nearest the river is the aquatics hall. The building has 53,959 sqm of floor area and rises 35 m, with 43,965 sqm above ground and 11,146 sqm below, and 6,484 seats, all fixed. Inside are a 50 by 25 m pool, 3 m deep, and a 25 by 25 m diving pool 6 m deep with standard diving platforms. Swimming, diving and artistic swimming at the 19th Asian Games were held here, along with swimming at the Asian Para Games, making it one of the venues that awarded the most gold medals. A dedicated water-treatment system uses candle-type diatomaceous-earth filters that screen particles down to one or two microns, catching not only suspended solids but parasites that ordinary disinfection struggles to kill, while variable-frequency circulation pumps adjust throughput to demand and save more than 15 per cent of energy. The hall passed completion inspection in April 2021 together with the main gymnasium and the training hall, and since the Games it has opened to the public as the Olympic Sports AT Centre for swimming, coaching and fitness. Seating runs along both sides of the pool, and the functional rooms include VIP lounges and a press conference hall.