Torra di a Castagna
France
The 186th tallest tower in the world
The Tower of Castagna (Corsican: Torra di a Castagna) is a ruined Genoese tower located in the commune of Coti-Chiavari on the west coast of Corsica. The tower was built in around 1600. It was one of a series of coastal defences constructed by the Republic of Genoa between 1530 and 1620 to stem the attacks by Barbary pirates.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).