The famous landmark Willis Tower (formerly known as Sears Tower) in Chicago, Illinois, USA

I had the great opportunity to visit the Willis Tower (formerly named Sears Tower), a 108-story building in Chicago which is the tallest building in the United States. It was the tallest in the world from 1974 to 1998, a rank that was held from time of completion and for a further 25 years.

Further review: blog.soluscious.net/index.php/2010/11/14/willis-tower-formerly-sears-tower/

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