Beijing National Aquatics Building (Water Cube Building), Beijing
The Beijing National Aquatics Building, affectionately known as the Water Cube Building because of its rectangular, bubble-like exterior, was built adjacent to the Bird's Nest. It housed the 2008 Olympics' swimming and diving events.
The cube-like shape is meant to represent earth, while the circular shape of the Bird's Nest symbolizes heaven. Today, the building has been redesigned for use as a water park, complete with water slides, rides and a wave pool.