Which is taller, the Aon Center (Chicago) or the St. Nikolai?
Answer : The Aon Center (Chicago) is taller than the St. Nikolai
The height of the Aon Center (Chicago) is 346 m, (1,135 ft) while the height of the St. Nikolai is 147 m, (482 ft)
| Name | Name:Aon Center (Chicago) | Name:St. Nikolai |
| Height | Height:346 m, (1,135 ft) | Height:147 m, (482 ft) |
| Location | Location:Chicago, United States | Location:Hamburg, Germany |
| Year Constructed | Year Constructed:1973 | Year Constructed:1846–1874 |
| Description | Description: | Description:Tallest freestanding structure on land from 1874 to 1876 |
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