The Leper's Tower
Italy
The 186th tallest tower in the world
The Leper's Tower (Tour du lépreux) is a tower located at the north-west corner of the Roman wall of Aosta, on the rue Jean-Boniface Festaz, in Aosta, Aosta Valley, Italy.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).