List of tallest buildings and structures
The tallest artificial structure is Burj Khalifa, a skyscraper in Dubai that reached in height on January 17, 2009. By April 7, 2008 it had been built higher than the KVLY-TV mast in North Dakota, USA. That September it officially surpassed Poland's Warsaw radio mast, which stood from 1974 to 1991, to become the tallest structure ever built. Guyed lattice towers such as these masts had held the world height record since 1954.
History of the world's tallest buildings
The spire of Mole Antonelliana in Turin, completed in 1889, is claimed to have been tall; however, the upper part of the structure was destroyed by a 1953 tornado and rebuilt. If the original spire was as tall as is claimed, then the Mole Antonelliana was the world's tallest building from 1889 to 1908, surpassing Philadelphia City Hall by .