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The Willis Tower, originally and still commonly referred to as the Sears Tower, is a 110-story, 1,451-foot (442.3 m) skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), it opened in 1973 as the world's tallest ...
A variation on the tube frame is the bundled tube, which uses several interconnected tube frames. The Willis Tower in Chicago used this design, employing nine tubes of varying height to achieve its distinct appearance. The bundle tube design was not only highly efficient in economic terms, but it was also "innovative in its potential for ...
The new One World Trade Center began construction in 2006; in April 2012 it surpassed the Empire State Building to become the city's tallest. Upon its topping out in May 2013, the 1,776-foot (541 m) One World Trade Center surpassed the Willis Tower to become the tallest building in the United States and the Western Hemisphere.
February 1, 2017 - Blackstone Group unveils its plans for $500 million in tower renovations, including revamping the lobby, adding retail and dining spaces and a rooftop garden, among other things.
Chicago, Illinois (WGN) - The Willis Tower has a new owner. The Blackstone Group is a private real estate investment team. Blackstone Real Estate Partners VII agreed to pay $1.3 billion for the tower.
At the time, the Willis Tower held first place in the second and third categories, the Petronas Towers held the first category, and the original WTC North Tower held the fourth (height to tip) category with its antenna. [19] In 2000, however, a new antenna mast was placed on the Willis Tower, giving it the record in the fourth category.
Those offices include The Willis Building in London, opened in 2008, and Willis Tower in Chicago (formerly known as Sears Tower), which was renamed in 2009. Willis Tower is the tallest building in ...
Lever House, 390 Park Avenue, Manhattan Manufacturers Trust Company Building at 510 Fifth Avenue, Manhattan Willis Tower, formerly known as the Sears Tower, in Chicago 7 World Trade Center, New York City Shaklee Terraces, San Francisco, completed 1979 with a flush aluminum and glass facade and rounded corners.