Castleboy Tower
Ireland
The 186th tallest tower in the world
Castleboy Tower is a 19th-century folly in the townland of Castleboy, Killinan, County Galway, Ireland. It was once part of the Castleboy House demesne owned by the Persse family and was perhaps converted into a folly from an earlier building. It is built of squared limestone over five floors, with a number of windows and an arched doorway. Following the demolition and division of the Castleboy estate by the Land Commission, the tower was left stranded on one side of a newly constructed road. Along with some walls of the stable yard, the tower is all that remains of the estate.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).