Recently, we ran down the largest buildings in the world in terms of usable space sorted by volume. Now, we take a look at the lofty structures that keep the globe’s great cities growing taller and taller. Office buildings are leading the way. In fact, nine of the 10 tallest buildings in the world house office space.

The Makkah Clock Royal Tower in Makkah, Saudia Arabia, is the world’s third-tallest building and the only one among the list of the world’s top 10 not designed primarily for office use. The largest tower of this government-owned high-rise, at 1,972 feet, houses a five-star hotel and residential space.

With a height of 2,167 feet, the Burj Khalifa in Dubai, United Arab Emirates, is the tallest building in the world. But it won’t be for long. If it is completed in 2019 as planned, the Kingdom Tower in Jeddah, Saudi Arabia, will take the title as the world’s tallest — in addition to being the first structure to reach a height of one kilometer (around 3,307 feet).

Here now are the world’s top 10 tallest office buildings according to data compiled by Emporis.

1. Burj Khalifa in Dubai, United Arab Emirates (163 floors, 2,617 feet)



2. Shanghai Tower in Shanghai, China (121 floors, 2,074 feet)



3. One World Trade Center (New World Trade Center) in New York, U.S.A (104 floors, 1,776 feet)



4. CTF Finance Centre (Guangzhou Twin Towers) in Guangzhou, China (116 floors, 1,739 feet)



5. Taipei 101 in Taipei, Taiwan (101 floors, 1,671 feet)



6. Shanghai World Financial Center in Shanghai, China (101 floors, 1,614 feet)



7. International Commerce Centre (Union Square) in Hong Kong, China (118 floors, 1,588 feet)



8. Petronas Towers in Kuala Lumpur, Malaysia (88 floors, 1,483 feet)



9. Zifeng Tower in Nanjing, China (66 floors, 1,476 feet)



10. Willis Tower in Chicago, U.S.A (108 floors, 1451 feet)