LYCOS RETRIEVER 
Sears: Sears Tower
built 662 days ago
The Sears Tower leads in the second and third categories. The height to the top of the roof is 1,450 feet and the height to the highest occupied floor is 1,431. The twin Petronas Towers in Malaysia win the first category with its 111-foot decorative spires.
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As of 2007, Sears Tower remains the tallest skyscraper in the western hemisphere and the largest commercial-use office building (in rentable square footage) in the United States. Annually 1.3 million people visit the observation deck alone, making the "Big Store" the 7th most popular tourist destination in Chicago (Source: Chicago Tribune, Sept 14, 2006). In addition, a recent public poll conducted by the American Institute of Architects, in commemoration of its 150th anniversary, ranked Sears Tower as America's third favourite Chicago architectural landmark.
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The new Sears Tower headquarters will give Easter Seals the ability to continue expanding its offices beyond its initial 25,401 RSF as it expects to continue growing from its current staff of about 100 employees. The first 49 stories of Sears Tower feature efficient 50,000-square-foot floors, which often appeal to larger organizations who want their employees to work together on a single floor.
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Sears saw a modern suburban office campus as a more efficient location than the Sears Tower in downtown Chicago, so they began the move to the new Prairie Stone Business Park in Hoffman Estates, Illinois between 1993 and 1995. The office park has a focus on technology and sustainability, featuring an extensive landscaping plan that uses native prairie plants wherever possible, and a system of several express bus routes coordinated with Pace to encourage public transportation use.[21]
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Chicago became home to the world's tallest building in 1973 when the Sears Tower was topped off. The Sears Tower remained the tallest building in the world until February 13, 1996. The Sears Tower continues to be the tallest building in North America.
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Sears Tower ... provides facilities for broadcasting to the Chicago metropolitan area. Twin 85-foot cylindrical supports, both 12-feet in diameter, project from inside the roof to provide a rigid steel base for 159-foot triangular communication towers each of which is encased in white fiberglass radome, extending the full building height. The 101st floor is leased to broadcasters for housing of transmitter equipment.
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