In , Sears Roebuck and Company was the world's largest retailer, employing approximately , people across Chicago. In order to consolidate current staff and accommodate anticipated growth, the company hired SOM to design a three million-square-foot office tower. The location of the tower was strategically selected for its proximity to expressways and commuter rail lines to benefit Sears employees.
The inhabitants of the bustling office building generated new energy in a formerly stagnant West Loop neighborhood. In , the London-based insurance broker Willis Group Holdings leased more than , square feet of office space on three floors of the Sears Tower.
Their contract included naming rights for 15 years. On July 16, , the name of the building was officially changed to Willis Tower. Explore Willis Tower and learn how the architects met the challenges of designing a super-tall building…. Must-See Chicago is a fast-paced, minute introductory tour to Chicago featuring some of its most famous….
Grattacieli storici e moderni in Italiano. This tour in Italian includes both historic and Modern skyscrapers…. Gallery 5 Items. Address S. Wacker Dr. Johnson Architectural Images. Copyrighted slides in the Artifice Collection.
Marcus Whiffen and Frederick Koeper. American Architecture, Volume 2. Reprint Edition available at Amazon. Artifice, GreatBuildings Links. Google Web Search. We appreciate your suggestions for links about Sears Tower. Great Buildings. Subscribers - login to skip ads. Chicago , Illinois map. Construction System. Corporate Modern. Now officially the " Willis Tower ". Photo, exterior overview from a distance. Photo, exterior overview, looking up.
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Side Usage. Until Taipei was topped out in , the Sears Tower held title to the world's highest roof and highest occupied floor. This has been the tallest building in Chicago since For a timeline of Chicago's tallest building through history, start with Holy Name Cathedral. The structure is formed from nine bundled square tubes, each 75 feet wide with no columns between the core and perimeter. Two of the tubes are 50 floors high, two are 66 floors, three are 90, and two are The design was actually inspired by a pack of cigarettes.
Architect Bruce Graham used a pack of cigarettes to visualize his idea of using a series of bundled cylinders at different heights to create the tower. Sears executives chose to build a single tall headquarters building over an alternative proposal for twin towers at half the existing tower's height.
The two antennae on the roof give the tower one of the highest "tip heights" of any skyscraper in the world. In , four high-definition television antennas were lifted to the roof by helicopter. In the company moved to a low-rise complex in the northwest Chicago suburb of Hoffman Estates. The lobby floor is decorated with metal tiles in a stylized design based on the bundled tube structure. The height was listed in many sources for years as 1, feet.
This is the result of misprinted data which was copied by several sources until it was corrected by the engineers in the middle s. The lobby contains the moving sculpture "The Universe" by Alexander Calder.
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