Torra di Mortella
France
The 186th tallest tower in the world
The Tower of Mortella (Corsican: Torra di Mortella) is a ruined Genoese tower on Corsica, located on the coast near Punta Mortella (Myrtle Point) in the commune of Saint-Florent, Haute-Corse. It was a progenitor of the numerous Martello towers the British built in the 19th century throughout their empire.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).