|Worlds tallest building in the world|
1. Kingdom Tower = is planned to become the new World's Tallest Building upon completion in 2016 with offices, hotel space and luxury residences being the envisioned uses of the tower.
A public viewing deck could be located at around 800 meters from the base of the tower, which is roughly near the height of the current World's Tallest Building, Dubai's 828 meter Burj Khalifa.
World's tallest building since 2009 (eclipsing Taipei's Taipei 101) and now the world's tallest man-made structure.
2. Burj Khalifa = The Height of Burj Dubai, as it was known prior to its renaming as Burj Khalifa, was kept private until the building's completion in 2010. The developer held a tight grip over the buildings final height, although in 2006 a height of 808 meters had been leaked by an individual familiar with the technical aspects of the project. Ultimately in 2009 the official height, 20 meters taller than the leaked figure, was confirmed and the Burj Khalifa would claim the title of World's Tallest Building at 828 meters.
3. World Trade Center = was a proposed 2500 feet (762 m) supertall skyscraper in Chicago, United States. It would have had 210 floors and it was also to look like the original World Trade Center towers in New York that were destroyed on September 11, 2001. The building was designed in 1982 by Harry Weese for Stanley Raskow, Sr. However, the design was never built.
4. Space Needle = is Proposed in 1968 by developer Lee M. Romano as the third phase of a large mixed use development in the Chicago suburb of Schaumburg. Would have been located at the intersection of Interstate 290 and Higgins Road, across the street from Woodfield Mall. The tower would have held 113 stories of office and retail in a squared tube design like the nearby Aon Center or New York's World Trade Center. An off-center antenna and broadcast facilities were planned for the top of the building.
5. Chicago Spire = was a supertall skyscraper project in Chicago, Illinois, which was abandoned in 2008 with only its foundation work completed. The construction was halted after several years of on-going financing challenges, including the global recession that began in 2008. Anglo Irish Bank Corp. filed a US$77 million foreclosure lawsuit against The Spire's Irish developer Garrett Kelleher, claiming that loans made to Kelleher’s development company had been in default for a year. The bank was expected to take possession of the site where the Spire was to have been built.