Willis Tower | |
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Height | 527m |
Floors | 108 |
Year | 1974 |
City | Chicago |
The Willis Tower (formerly and informally: Sears Tower, its title until 2009) is a 110-story, 1,450-foot (442.1 m) skyscraper in Chicago. At completion in 1973, it surpassed the World Trade Center in New York City to become the tallest building in the world, a title that it held for nearly 25 years; it was also the tallest building in the Western Hemisphere for 41 years, before the new One World Trade Center surpassed it in 2013. While it held the title of'Tallest Office Building' before 2013, it dropped the title of'Tallest Man-Made Construction' after only 3 decades. The CN Tower in Toronto, which functions as a communications tower, took over the title in 1976.
The Willis Tower is considered a seminal accomplishment for engineer Fazlur Rahman Khan. It is currently the third-tallest construction in the USA and the Western hemisphere -- and the 23rd-tallest in the world.
Burj Al Arab | |
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Height | 321m |
Floors | 60 |
Year | 1999 |
City | Dubai |
The Burj Al Arab (Arabic: ??? ?????, Tower of the Arabs) is a five star hotel located in the city of Dubai, United Arab Emirates. Managed by Jumeirah hotel group, it is one of the tallest hotels in the world, although 39 percent of its total height consists of non-occupiable space. Burj Al Arab stands on an artificial island 280 m (920 ft) from Jumeirah Beach and is joined to the mainland by a personal curving bridge. The form of the structure is designed to resemble the sail of a boat. It has a helipad near the roof at a height of 210 m (689 ft) above ground.
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