The twin buildings were once the tallest in the world but still remain among the tallest. They reach an incredible 452 metres (1483 feet) in height and feature 88 floors.
6. Nanjing Greenland Financial Center, Nanjing
Located in Nanjing, China, the Nanjing Greenland Financial Center is one of the tallest buildings in the world. The towering skyscraper reaches 450 metres (1476 feet) in the air and contains 89 floors.
7. Willis Tower, Chicago
Formerly known as Sears Tower, the Willis Tower was the tallest building in the world when it was completed in 1973. It has since lost that title but at 442 metres tall (1451 feet) in height, it is still an impressively tall building.
