China to Build World’s Tallest Building in 90 Days

Broad Sustainable Building(NEW YORK) -- When the Sky City skyscraper in Changsha, China, is finished in March, it will rise 2,749 feet and be the tallest building in the world.

The building’s size is almost as impressive as the speed at which it will be completed. The construction company told Gizmodo that the tower, all 220 floors, will be built in just 90 days.

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