Modern Marvels

The Sears Tower (11x39)

Air date: Sep 08, 2004

The Sears Tower, located in Chicago, was finished in 1973. It was the tallest building in the world for over 20 years, and remains the tallest building if you look at highest occupied space. See how the Sears Tower was conceived, designed and built and see how a cigarette pack was the basis for one of Chicago's most unique buildings.