Saint John's Tower (Castledermot)
Ireland
The 186th tallest tower in the world
Saint John's Tower, also called the Pigeon Tower, is a tower in Castledermot, County Kildare, Ireland. A former bell tower, it is all that remains of a medieval leper hospital and is a National Monument.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).