Castle Craig
United States
The 186th tallest tower in the world
Castle Craig, located on East Peak in the Hanging Hills, is constructed of trap rock and is 32 feet (10 m) in height and has a base 58 feet (18 m) in circumference. A metal interior stairway is used to ascend the observation deck on top. It stands 976 feet (297 m) above sea level and provides an expansive view of the greater Meriden, Connecticut area.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).