Sears tower, USA

Iwo Jima
Disappearing highway
Censored Het Binnenhof
Sears tower, Chicago
Suggested by: clirre

How cool is this: 4.104.104.104.104.10

The tallest building in the world until 1996 looks beautiful on GE.
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Information about Sears tower

The Sears Tower is a skyscraper in Chicago, Illinois, and the tallest building in North America. Commissioned by Sears, Roebuck and Company, it was designed by chief architect Bruce Graham and structural engineer Fazlur Khan of Skidmore, Owings, & Merrill.

Construction commenced in August 1970 and the building reached its originally anticipated maximum height on May 3, 1973. When completed, the Sears Tower had overtaken the twin towers of the World Trade Center in New York City as the world's tallest building. The tower has 108 stories as counted by standard methods, though the building owners count the main roof as 109 and the mechanical penthouse roof as 110. The distance to the roof is 1,450 feet, 7 inches (442 m), measured from the east entrance.

In February 1982, two television antennas were added to the structure, increasing its total height to 1,707 feet (520 m). The western antenna was later extended to 1,729 feet (527 m) on June 5, 2000 to improve reception of local NBC station WMAQ-TV. In the process it surpassed the height of the antenna on 1 World Trade Center.

Two-story high black bands appear on the tower around the 30th–32nd, 64th–65th, 88th–89th, and 106th–107th floors. These are louvers which allow ventilation for service equipment and obscure the structure's belt trusses which Sears Roebuck did not want to be visible as on the John Hancock Center.

The building's official address is 233 South Wacker Drive, Chicago, Illinois 60606.

This information was provided by Wikipedia under the GNU license. Read more about this placemark on Wikipedia.

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