#12 Guangzhou International Finance Center - Guangzhou, China. Height: 1439 feet
#11 KK100 - Shenzhen, China. Height: 1449 feet
#10 Willis Tower - Chicago, USA. Height: 1451 feet
#9 Zifeng Tower - Nanjing, China. Height: 1476 feet
next slide will load in 15 secondsSkip AdSkip Ad#8 Petronas Towers 1 and 2 - Kuala Lumpur, Malaysia. Height: 1483 feet
#7 International Commerce Centre - Hong Kong, China. Height: 1588 feet
#6 Shanghai World Financial Center - Shanghai, China. Height: 1614 feet
#5 Taipei 101 - Taipei, Taiwan. Height: 1667 feet
#4 Shanghai Tower - Shanghai, China. Height (current): 1722 feet. When completed in 2014, the tower will be 2073 feet.
next slide will load in 15 secondsSkip AdSkip Ad#3 One World Trade Center - New York, NY. Height (when spire is installed): 1776 feet
#2 Makkah Royal Clock Tower Hotel - Mecca, Saudi Arabia. Height: 1972 feet
#1 Burj Khalifa - Dubai, United Arab Emirates. Height: 2717 feet
But these buildings won't be the tallest for long.