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.
Jeddah Tower
The building has been scaled down from its initial (about one mile) proposal, which was never fully designed, to a height of at least (the exact height is being kept private while in development, similar to the Burj Khalifa). At about one kilometre, Jeddah Tower would still be by far the tallest building or structure in the world to date, standing taller than the Burj Khalifa in Dubai, United Arab Emirates.