Here is a list of the 10 tallest buildings in the world by height:
Burj Khalifa in Dubai (known as Burj Dubai, built in 2010, 828m) is today’s tallest man-made structure in the world and a tallest skyscraper. It also broke many other records when it was finished like: building with most floors, highest installation of an aluminum and glass façade in the world and world’s highest nightclub among others.
Mecca Royal Clock Tower Hotel (also Abraj Al-Bait Towers, 2012, 610m) is a building complex in Mecca, Saudi Arabia. It holds world records for the tallest clock tower in the world and the world's largest clock face. It has a large prayer room capable of holding more than 10,000 people.
One World Trade Center in New York City (known as Freedom Tower, 2013, 541.3m) is the primary building of the new World Trade Center complex and stands on the place of Six World Trade Center which was demolished in the September 11 attacks in 2001. Its construction is part of an effort to memorialize and rebuild the original World Trade Center complex.
Taipei 101 in Taipei, Republic of China (2004, 509m) was the world's tallest building from 2004 until the opening of the Burj Khalifa. In July 2011 it became the tallest and largest green building in the world awarded with awarded with LEED Platinum certification. It has 101 floors above ground and 5 floors underground.
Shanghai World Financial Center (2008, 492m) in Shanghai, China. It consists of offices, hotels, conference rooms, observation decks, and ground-floor shopping malls. It is the tallest structure in Mainland China and its most distinctive feature is the trapezoid aperture at the peak which is designed to reduce the stresses of wind pressure on the building.
International Commerce Centre (known as as Union Square Phase 7, 2010, 484m) in West Kowloon, Hong Kong where is the tallest building. It has 118 floors, a number of five-star restaurants, a class-A office space, a bank on 12 floors, a hotel and an observatory.
Petronas Towers (Menara Berkembar Petronas, 1998, 452m) in Kuala Lumpur, Malaysia are twin skyscrapers that remain the tallest twin building in the world. They were designed by Argentine architect César Pelli and are built on the world's deepest foundations that range from from 60 to 114 m in depth.
Zifeng Tower (also had names: Greenland Center-Zifeng Tower, Greenland Square Zifeng Tower, and Nanjing Greenland Financial Center, 2010, 450m) in Nanjing, China. It has 89 floors on which are placed retail shops, office space, restaurants, a hotel, and a public observatory near the top.
Willis Tower (formerly Sears Tower, 1973, 442m) in Chicago, USA was the tallest building in the world at the time of completion. Today is the second-tallest building in the United States and the eighth-tallest freestanding structure in the world. It has 108 floors and mainly offices. Tower is one of the most popular tourist destinations in Chicago because of its observation deck, called the Skydeck, placed on the height of 412 m.
KK100 (formerly known as Kingkey 100 and Kingkey Finance Center Plaza, 2011, 442m) is located in Shenzhen, Guangdong province, China. It has 100 floors used for for office space, a hotel, a garden on the top four floors and several restaurants.