| Name | Name:Anaconda Smelter Stack | Name:Arecibo Telescope |
| Height | Height:178 m, (585 ft) | Height:150 m, (492 ft) |
| Location | Location:Anaconda, United States | Location:Arecibo, United States |
| Year Constructed | Year Constructed:1919 | Year Constructed:1963 |
| Description | Description:A very tall Masonry tower . In 2013 it was the tallest Masonry tower in the world. | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. |
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