Fortress of San Carlos de La Cabaña, Havana - Credit: Wikimedia Commons
Fortaleza de San Carlos de la Cabaña (Fort of Saint Charles), colloquially known as La Cabaña, is an 18th-century fortress complex, the third-largest in the Americas, located on the elevated eastern side of the harbor entrance in Havana, Cuba. The fort rises above the hilltop, along with Morro Castle. The fort is part of the Old Havana World Heritage Site which was created in 1982. Read more on Wikipedia
Source: en.wikipedia.org