Burj Khalifa ( Arabic for “Tower Khalifa ‘), formerly known as Burj Dubai, is a skyscraper in Dubai , United Arab Emirates , inaugurated the opening on January 4 2010 . The height of this skyscraper is 828 meters (2717 feet).
Burj Khalifa is the tallest building in the world ever made by man . Starting from passing the height of Taipei 101 as the tallest building in the world on July 21 2007 . On 12 September 2007 , the height of the Burj Khalifa made it past the CN Tower as a structure-free (without support), the highest in the world and on 7 April 2008 the tallest structure in the world of the KVLY-TV tower located in Blanchard , North Dakota ,United States successfully passed . The tallest structure ever built by man, the Warsaw Radio Tower 645.4 m (2120 feet) was made in 1974 (but collapsed during renovations in 1991) successfully passed on 1 September 2008 .