Burj Khalifa, also known as Burj Dubai or Dubai Tower in the United Arab Emirates, is the tallest building in the world at 2,717 feet tall.
In the No. 2 spot is the Makkah Royal Clock Tower Hotel in Mecca, Saudi Arabia, completed in 2012. It stands 1,972 feet tall.
A massive 60-foot spire makes Taipei 101 Tower in Taiwan the third-tallest building in the world at 1,667 feet.
A trapezoid-shaped opening near the top reduces wind pressure on the world's fourth-tallest tower, the 101-story (1,614 feet tall) Shanghai World Financial Center in China.
The International Commerce Centre in Kowloon, Hong Kong, comes in at No. 5, at a height of 1,588 feet and 108 stories.
Tall spires atop the Petronas Towers in Kuala Lumpur, Malaysia, make them the sixth-tallest (tied) at 1,483 feet.
China's Zifeng Tower, which opened in 2010, comes in at No. 7 on the list, rising to a height of 1,476 feet.
The Willis Tower, formerly known as the Sears Tower, was the tallest building in the world when it opened in 1974 and retained that title until the Petronas Towers opened in 1998. Today, it's the eighth-tallest in the world and the tallest in North America at 108 stories and 1,451 feet. One World Trade Center became the tallest structure in North America when a spire installed on the top topped it out at 1,776 feet, but the New York building is still under construction.
At No. 9 is the Kingkey 100 building in Shenzhen, China, which stands 1,449 feet tall.
The Guangzhou West Tower, located in Guangzhou, China, is the world's 10th-tallest building, coming in at 1,439 feet and 103 stories.
America's current second-biggest building is located just blocks away from it's tallest. The Trump International Hotel and Tower, which opened in Chicago in 2009, rises to a height of 1,389 feet and 98 stories, making it the world's 11th-tallest building.
When it was constructed in 1931, the Empire State Building was the tallest building in the World. Today, it's ranks 19th at 1,250 feet tall and and 102 floors.