In July 2003, the Water Cube design was chosen from 10 proposals in an international architectural competition for the aquatic center project.[6] The Water Cube was specially designed and built by a consortium made up of PTW Architects (an Australian architecture firm),[7] Arup international engineering group, CSCEC (China State Construction Engineering Corporation), and CCDI (China Construction Design International) of Shanghai.[8] The Water Cube's design was initiated by a team effort: the Chinese partners felt a square was more symbolic to Chinese culture and its relationship to the Bird's Nest stadium, while the Sydney-based partners came up with the idea of covering the 'cube' with bubbles, symbolising water. Contextually the cube symbolises earth whilst the circle (represented by the stadium) represents heaven. Hence symbolically the water cube references Chinese symbolic architecture.
