Bird's Nest : Olympic Games - National Stadium

The National Stadium will host the opening and closing ceremonies of the
29th Olympiad, as well as athletic track and field events. On completion it
will have a capacity of 91 000 seats, including 11 000 temporary seats for
the duration of the Games.
The Stadium is located in the Olympic Green, the focal point for the
Beijing Games. The building’s vast scale and dramatic form will create
a new icon for China and the City of Beijing. The circular form of the
Stadium represents Heaven, while the adjacent square form of the
National Aquatics Centre, also design-engineered by Arup, is a reflection
of the Chinese symbol for Earth.