Official site of the tallest building in North America, Willis Tower. ... A triumph of ingenuity and innovation, Willis Tower stands tall on the Chicago skyline. ... With comprehensive security networks and a wide range of top-quality amenities, Willis Tower is an ideal location for business.
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www.thesearstower.com/
www.thesearstower.com/
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Sears Tower by Bruce Graham/ SOM architect, at Chicago, Illinois, 1974 to 1976, in the Great Buildings Online. ... "The Sears Tower is the world's tallest building. The stepback geometry of the 110-story tower was developed in response to the interior space requirements of Sears, Roebuck and Company.
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www.greatbuildings.com/buildings/Sears_Tower.html
www.greatbuildings.com/buildings/Sears_Tower.html
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A closer look at one of the most spectacular engineering projects of the 20th century. ... This site is not affiliated with U.S. Equities Asset Management LLC nor 233 South Wacker LLC. "Sears Tower" and the quadrant-extrusion logotype are trademarks of Randall E. Krause...
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www.searstower.org/
www.searstower.org/
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Learn about the famed American skyscraper, Sears Tower, with polls and a guestbook regarding the Willis Tower name change protest. ... On July 16, 2009 Sears Tower was officially renamed Willis Tower. Will you continue to refer to the building by its original name?
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www.searstower.org/home.html
www.searstower.org/home.html
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The Sears Tower in Chicago ... At the time the Sears tower was constructed in 1974, it was the world's tallest building, eclipsing New York's twin-towered World Trade Center by 25 meter (83 ft). It would keep the title of tallest building in the world until the Petronas twin towers in Kuala Lumpur, Malaysia were constructed...
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www.aviewoncities.com/chicago/searstower.htm
www.aviewoncities.com/chicago/searstower.htm
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All Skydeck ticket purchases include the LEDGE!; ... Save time and avoid ticket lines!; Five famous Chicago attractions for one low price ... Willis Tower rated "excellent" by 25 travelers;
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Building Big Databank entry on Sears Tower ... The Sears Tower is an example of the revolutionary bundled-tube structural design. Tube buildings gain most of their structural support from a rigid network of beams and columns in their outer walls. The rigid outer walls act like the walls of a hollow tube.
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www.pbs.org/wgbh/buildingbig/wonder/structure/sears_tow...
www.pbs.org/wgbh/buildingbig/wonder/structure/sears_tower.html
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