Castillo de San Pedro de la Roca
Santiago de Cuba, Cuba
The Castillo de San Pedro de la Roca (also known by the less formal title of Castillo del Morro or as San Pedro de la Roca Castle) is a fortress located on the coast of the Cuban city of Santiago de Cuba. About 6 miles (10 km) southwest of the city centre, it overlooks the bay. The fortress was declared a World Heritage Site by UNESCO in 1997, cited as the best preserved and most complete example of Spanish-American military architecture.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).