A closer look at one of the most spectacular engineering projects of the 20th century and the world's second-tallest building.

See Chicago's most breathtaking views from the world's tallest building at Skydeck Chicago at Willis Tower. Site offers directions, hours, ticket, student & group event information

Willis Tower, formerly named Sears Tower, is a 108-story 1,451 feet (442 m) skyscraper in Chicago, Illinois. [1] At the time of its completion in 1973, it was the tallest building ...

Official site of the tallest building in North America, Willis Tower. Formerly known as Sears Tower, the building's 110 stories features 3.8 million square feet of office space ...

Learn about the famed American skyscraper, Sears Tower, with polls and a guestbook regarding the Willis Tower name change protest.

Commemorating the 35th anniversary since topping out of Sears Tower on May 3, 1973.

Sears Tower by Bruce Graham/ SOM architect, at Chicago, Illinois, 1974 to 1976, in the Great Buildings Online.

The Sears Tower in Chicago ... At the time the Sears tower was constructed in 1974, it was the world's tallest building, eclipsing New York 's twin-towered World Trade Center by 25 ...

Introducing the LEGO Architecture Landmark series of real-world construction models! This striking black-and-white replica of the famous Sears Tower in Chicago, U.S.A. measures 9 ...

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