Officials have photos taken on the ceremony launching China's National Stadium, known as the Bird's Nest, on June 28, 2008. Covering 20.4 hectares in the Beijing Olympic Green, the bowl-shaped and girder-structured huge nest with 91,000 seats will hold the opening and closing ceremonies, track and field events, men's soccer of the coming 2008 Beijing Olympic Games, and some events for the later Paralympics. (Xinhua Photo)

Photo taken on May 16, 2008 shows the exterior of the National Stadium, also known as the bird's nest will be the main track and field stadium for the 2008 Summer Olympic Games and serves as venue to the Opening and Closing ceremonies of the games. (Xinhua Photo)