| Name | Name:Obninsk Meteorological tower | Name:Arecibo Telescope | 
| Height | Height:315 m, (1,033 ft) | Height:150 m, (492 ft) | 
| Location | Location:Obninsk, Russia | Location:Arecibo, United States | 
| Year Constructed | Year Constructed:1958 | Year Constructed:1963 | 
| Description | Description:A very tall Tower for scientific research . In 2013 it was the tallest Tower for scientific research in the world. | Description:A very tall Telescope . In 2013 it was the tallest Telescope in the world. | 
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