The National Stadium, or Bird's Nest, is seen in this picture taken on July 7, 2008. [newsphoto]

Flag poles can be seen next to the track at the National Stadium, also known as the Bird's Nest, in Beijing April 16, 2008. [Agencies]

The National Stadium, or Bird's Nest, is seen in this picture taken on July 7, 2008. [newsphoto]