For holding the 29th Olympic Games in Beijing (Peking) the Chinese built the biggest bird’s nest in the world – Beijing’s national, multifunctional sport complex. The “Bird’s Nest” is considered to be the most expensive sport complex of the 21st contort: the project budget amounted $ 423 million.
The structure intended for 91 000 spectator required 70 000 tons of steel prepared with special formula, which excluded the danger of collapse.
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