Willis Tower

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5 Architecture Facts About the Willis Tower

For almost 25 years the Willis Tower, more commonly known as Sears Tower, held the title for the tallest building in the U.S. Second place isn’t bad, right? And as the 12th tallest in the world at a height of 1,451 feet, it is Chicago’s most beloved skyscraper.

  • Commissioning The Building

    1. Commissioning The Building

    In order to house their rapidly growing company, Sears commissioned architects Skidmore, Owings & Merrill in 1969. Architect Bruce Graham and engineer Fazlur Rahman Kahn led.

  • Advancements in Architecture

    2. Advancements in Architecture

    The Willis Tower was the first to ever use a bundled tube structure. Kahn’s design was so revolutionary that it was later used for the world’s tallest building, the Burj Khalifa.

  • Inspiration

    3. Inspiration

    Graham’s design was inspired by a cigarette ad. He demonstrated the concept to a colleague by pulling cigarettes out of a pack to illustrate the 9 tubes at different heights.

  • How was it Built

    4. How was it Built

    Construction began in April of 1971 and was finished by May 1973. Economically efficient for a building its size, the cost to build was $150 million, about $800 million today.

  • The Skydeck

    5. The Skydeck

    Willis Tower’s observation deck is what makes it celebrated. At 1,353 feet, visitors can feel the building sway on a windy day and see over the plains of Illinois on a clear day.

Planning Your Visit

  • Where is it

    The address of Willis Tower is 233 South Wacker Drive, Chicago, Illinois 60606. Public transportation is easy because it's in such a central location -- off Blue, Brown, Orange, Pink, Purple and Red Lines on the ‘L.

  • Where to Park

    Parking is available at 221 W. Adams, and purchasing a parking card in advance online will get you a discount.

  • When to Go

    Skydeck Chicago is open 365 days a year from 9AM to 10PM April through September and 10AM to 8PM October through March. View at night for the romantic glittering cityscape, by day for the sweeping view of Lake Michigan.

  • Admission

    The basic price for adult admission is $19.50. A variety of ticketing bundles with other Chicago attractions, like a visit to the Art Institute of Chicago, are available.

Good to know

  • When should I visit?
    April - Sept: 9:00AM - 10:00PM |
    Oct - March: 10:00AM - 8:00PM
  • Is it expensive?
    $19.50
  • Will I need a guide?
    Nope, but they are available if you want special insights into the building and its surroundings.
  • How to get there
    Take the L, walk, or drive.
  • Additional information
    As with other spectacular views, the best times to visit the SkyDeck are in the early morning and around sunset.

Other Sightseeing Options in Willis Tower

Want to discover all there is to do in Willis Tower? Click here for a full list.

What people are saying about Willis Tower

Overall rating

4.6 / 5

based on 4,954 reviews

Absolutely loved this tour. Jack, our tour guide was very knowledgeable and added just the right amount of humor to make this one the most interesting and fun tours we’ve ever experienced.

Sam's enthusiasm in sharing his architectural knowledge was SUPERB!!! Thoroughly enjoyed the boat tour and would recommend it for anybody visiting the city!

Get there early for good seating. Very informative guide. Pretty views and photo opportunities. Bathroom on boat. Dont forget your mask.

Our guide, Wallach, was excellent. We learned so much about Chicago. Highly recommended.

Jim was great! I always learn something new on this tour. This was my fourth time.