A semi-transparent "cube", with "bubbles" spread out all over its surface, is a shape very similar to the structure of  "H2O", the outlook for the National Swimming Center at the 2008 Olympic Games. After the games, it will become a recreational water park open to the public.

In Chinese culture, water is an important natural element. It creates a calming atmosphere and inspires happiness. Taking full consideration of the functions of water in recreation and bodybuilding, designers have explored many ways for people of different age groups to appreciate its function. The design is called "Water Cube". Many creative designs have been employed in the creation of the swimming pools at the swimming center. Other high-tech facilities including optical devices used to define positions of athletes, and multiple-angle, three-dimensional screening systems are provided to help spectators enjoy competitions.