List of tallest buildings and structures
The world's tallest artificial structure is the Burj Khalifa in Dubai (of the United Arab Emirates). The building gained the official title of "Tallest Building in the World" and the tallest self-supported structure at its opening on January 9, 2010. The second-tallest self-supporting structure and the tallest tower is the Tokyo Skytree. The tallest guyed structure is the KVLY-TV mast.
List of tallest buildings and structures
Taipei 101 in Taipei, Taiwan, set records in three of the four skyscraper categories at the time it opened in 2004; at the time the Burj Khalifa opened in 2010 it remained the world's tallest inhabited building as measured to its architectural height (spire). The height of its roof and highest occupied floor had been surpassed by the Shanghai World Financial Center with corresponding heights of . Willis Tower (formerly Sears Tower) was the highest in the final category: the greatest height to top of antenna of any building in the world at .