 2640
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| City | Chicago | | Country | USA | | Year | 1989 | | Height | 193,5m / 635ft | | Floors | 50 | | Surface | 135.638m2 / 1,460,000sq ft |
| Architect | Kevin Roche, John Dinkeloo & Associates | | Engineers | Cohen Barreto Marchertas, Inc. |
| Name | Leo Burnett Company HQ | | Category | Office Building | | Materials | steel reinforced concrete glass | | Address | 35 West Wacker Drive at North Dearborn Street |
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