| Name | Name:Eiffel Tower | Name:Arecibo Telescope | 
| Height | Height:300 m, (984 ft) | Height:150 m, (492 ft) | 
| Location | Location:Paris, France | Location:Arecibo, United States | 
| Year Constructed | Year Constructed:1889 | Year Constructed:1963 | 
| Description | Description:First structure to exceed 300 metres in height. The addition of a telecommunications tower in the 1950s brought the overall height to 324 m (1,063 ft). Tallest freestanding structure on land from 1889 to 1930 | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. | 
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