Milutin Tower, Hilandar
Greece
The 186th tallest tower in the world
Milutin Tower (Serbian, kula Milutina) or Tower of the Horseman is a medieval defensive structure dedicated to Stefan Milutin, located in Serbian Orthodox Hilandar Monastery in Mount Athos, Greece.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).