World's tallest artificial structure --

The world's tallest artificial structure is the 829.8 - metre - tall (2,722 ft) 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. Burj Khalifa was developed by Emaar properties, designed by Skidmore, Owings and Merrill and built by BESIX, Samsung Construction and Arabtec.

The second - tallest self - supporting structure and the tallest tower in the world is the Tokyo Skytree. The tallest guyed structure is the KVLY - TV mast.