Thursday, 12 March 2009

Sears Tower becomes Willis Tower

The Sears Tower has been the tallest building in United States since 1973.

It is one of five freestanding structures in the world which exceed 500 meters in height.

It was designed by American architect Bruce Graham who is an author of Inland Steel Building and the John Hancook Centre.

The Sears Tower has 108 stories plus main roof and the mechanical penthouse.

In 1982 two television antennas were added to the building and increased its height to 520 meters or 1,707 feet.

Now the Sears Tower is changing its name and will become Willis Tower.

The reason of these changes is London –based Willis group Holdings - the largest new tenant to move into the building.

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