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.
Woolworth Building
The Woolworth Building is an early American skyscraper located at 233 Broadway in Manhattan, New York City. Designed by architect Cass Gilbert, it was the tallest building in the world from 1913 to 1930, with a height of . More than a century after its construction, it remains one of the 100 tallest buildings in the United States as well as one of the 30 tallest buildings in New York City.