Martello Tower at La Preneuse
Mauritius
The 186th tallest tower in the world
The Martello Tower at La Preneuse (also known as the Martello Tower Museum) is a 19th-century British defensive fortification located on La Preneuse public beach in the Rivière Noire District of Mauritius. It is one of only three surviving Martello towers built on the island and has been restored as a public museum dedicated to Mauritius' military and colonial history.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).