| Name | Name:Cathédrale Notre Dame | Name:Arecibo Telescope | 
| Height | Height:151 m, (495 ft) | Height:150 m, (492 ft) | 
| Location | Location:Rouen, France | Location:Arecibo, United States | 
| Year Constructed | Year Constructed:1202–1876 | Year Constructed:1963 | 
| Description | Description:Tallest freestanding structure on land from 1876 to 1880 | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. | 
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