Name | Name:Willis Tower (Formerly Sears Tower) | Name:Arecibo Telescope |
Height | Height:442 m, (1,450 ft) | Height:150 m, (492 ft) |
Location | Location:Chicago, United States | Location:Arecibo, United States |
Year Constructed | Year Constructed:1973 | Year Constructed:1963 |
Description | Description: | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. |
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