No. 2: Burj Dubai

Skidmore, Owings & Merrill

No. 2: Burj Dubai

Location: Dubai
Completion Year: 2009
Stories: 160-plus
Height: 2,600 ft.-plus

The final height of this—already the world's tallest building—has yet to be finalized. The $1.4 billion project is intended to anchor the rapid development of downtown Dubai. Inside, the tower's developers promise a number of gee-whiz features including an Armani-designed luxury hotel and the world's fastest elevator.