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Willis Tower
The 110-story Loop tower that was the world’s tallest for 25 years.
- Address
- 233 S Wacker Dr, Chicago, IL 60606
- Cook County PIN
- 17162160090000
Willis Tower — the Sears Tower to most Chicagoans — rises 1,451 feet over the southwest Loop at 233 S Wacker Drive. Finished in 1973 to Bruce Graham and Fazlur Rahman Khan’s bundled-tube design for SOM, it was the tallest building in the world for a quarter century. In the public record it is a single Cook County parcel, 17-16-216-009-0000, in a downtown zoning district built for exactly this kind of density.
One parcel, one PIN, one of the most valuable land assessments in Illinois — and the same public record any homeowner’s parcel carries. Open the full record to see its zoning, assessment, and where it sits in the 2027 reassessment cycle.