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Explore Willis Tower and learn how the architects met the challenges of designing a super-tall building in the 1970s. We’ll also visit 311 S. Wacker Drive across the street and compare its Postmodern design to Willis Tower’s Modernism.

0.75 Hour
Inside the Wacker Dr. entrance of Willis Tower

Originally developed and named for Sears Roebuck and Co., the Willis Tower was the world's tallest building for almost 25 years. Learn how the architects met the challenges of designing this super-tall building and hear about efforts being made to retrofit the building to meet today's energy efficiency standards. We'll discuss the 5-story crown atop 311 S. Wacker Drive and how the building plays off the neighboring Willis Tower too. Together, these two buildings illustrate the major design and structural characteristics of twentieth century architecture.

  • This tour does not include entrance to the Skydeck.
  • Although it's not required, we recommend making reservations in advance for this tour.
  • Ticket price includes entrance to the Chicago Architecture Center within 7 days of your tour. View the CAC's hours.
  • This tour is available for private bookings. Contact for more information.

Upcoming Willis Tower and 311 S. Wacker Drive Tours

No upcoming departures are currently scheduled for this tour. To learn about other CAC tours and events, sign up to receive our monthly e-news at