Tirefour Castle
United Kingdom
The 186th tallest tower in the world
Tirefour Castle, (or Tirefour Broch, also spelled Tirfuir and Tirrefour) is an Iron Age broch located 4 kilometres north of Achnacroish on the island of Lismore, Scotland.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).