Take in stunning views high above Chicago

Built in 1973 as the Sears Tower for Sears Roebuck Company (then one of the world's largest retailers), this 1353-foot building was once the world's tallest, and is still the tallest building in the western hemisphere - far taller than New York's Empire State, for example, which has always pleased Chicagoans greatly.

Renamed the Willis Tower, most visitors to Chicago will no doubt be tempted by the unparalleled views from the Skydeck on the 103rd floor. Tourists flock to this destination and lines can get pretty long, but the view is certainly impressive.

From the top, visitors have a 360-degree view of the city and Chicagoland extending into the distance. On a clear day you can see landmarks in four different neighboring states.