World biggest building is in China

New Century Global Centre is a multipurpose building in the Tianfu New Area of Chengdu, China. The 100 m (330 ft) structure is 500 by 400 m (1,600 by 1,300 ft) with 1,700,000 square metres (18,000,000 sq ft) of floor space, making it the world's biggest building measured by floor space. The Boeing Everett Factory in Everett, Washington has the largest volume, and the Aalsmeer Flower Auction Building in Aalsmeer, Netherlands, has the largest footprint.