| Name | Name:Chrysler Building | Name:Aon Center (Chicago) | 
| Height | Height:319 m, (1,047 ft) | Height:346 m, (1,135 ft) | 
| Location | Location:New York, United States | Location:Chicago, United States | 
| Year Constructed | Year Constructed:1928–1930 | Year Constructed:1973 | 
| Description | Description:Tallest freestanding structure on land from 1930 to 1931 | Description: | 
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