Exploring the Windy City: Things to Do in Chicago

11 Willis Tower

Once the tallest skyscraper in the world, when it was famously known as the Sears Tower, Willis Tower is a major Chicago attraction. Completed in 1973, Willis Tower has 110 stories. Taking an elevator to the observation deck is a Chicago rite of passage. When you get to the top, you'll have a majestic view of the city. Do your best to schedule this stop for a clear day; you'll have a great view of the lake shore and other breathtaking urban sights.

Scott Olson / Getty Images