Garrison Hill Park and Tower

Garrison Hill Tower is a 76-foot-tall (23 m) observatory atop Garrison Hill in Dover, New Hampshire, United States. The current tower, made of iron and painted green, was built in 1993 and is the third tower to exist on the hill. The park in which it stands is listed on the National Register of Historic Places.

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).