The "New Century Global Center" building opens to the public in Chengdu, southwest China's Sichuan province on June 28, 2013. The center, claimed by Chinese officials to be "the world's largest standalone structure", measuring 500 meters in length and 400 meters in width, with 1.7 million square meters of floor space -- big enough to hold 20 Sydney Opera Houses -- is the latest symbol of China's economic boom.
The World's Biggest Building

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The gigantic dome-like glass roof is 100 meters high.

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The bulding has built-in has an "artificial sun" that will provide 24 hours of sun and heat to the visitors.

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The "New Century Global Center" building (top) is seen standing among several buildings in Chengdu,