The building consists of two angled towers connected at the top to form a continuous loop of horizontal and vertical sections. The spectacular 230 meter (755 foot) building, one of Beijing's tallest, will house more than 10,000 staff. The building is one of a series of landmarks, notable for their futuristic design, that will greet visitors to the Olympics Games, which open Aug. 8.
Cleaners stand in water as they scrub the outside of the National Grand Theatre which has been nicknamed the "egg", in Beijing July 11, 2008.
The Bird Nest National Stadium lit up for a rehearsal of the opening ceremony is reflected in a pool of water in Beijing, China, Wednesday, July 16, 2008. Full dress rehearsals are conducted under a cloak of secrecy ahead of one of the most anticipated summer Olympic Games. (AP Photo/Ng Han Guan)
Two Olympic venues, the National Aquatics Center, also known as the Water Cube, left, and the National Olympic Stadium, also known as the Bird's Nest, at right, are seen in Beijing. (AP Photo/Greg Baker, file)