Tallest building in the world: The CN Tower in Toronto was the

The CN Tower in Toronto was the world's tallest freestanding structure from 1975 to 2007. The following is a list of structures that have historically held the title as the tallest towers in the world. You'll find no shortage of majestic buildings, but one stands above all the rest: Dubai's very own Burj Khalifa, the tallest building in the world. Opened officially in 2010 and now a must-see landmark in Dubai, UAE, the skyscraper owns many records. Find out the 100 tallest completed buildings in the world in 2025, with detailed information on their height, floors, materials, functions and status. See the Burj Khalifa, Merdeka 118, Shanghai Tower and more on the list. The Burj Khalifa in Dubai, soaring at 828 meters (2,717 feet), currently holds the title of the tallest building in the world, completed in 2010. This marvel showcases a blend of cutting-edge technology and artistic design, offering spaces for both residential and commercial use.