This unmissable military park, included in the Habana Vieja Unesco World Heritage site, is arguably the most formidable defensive complex in Spain's erstwhile colonial empire. It's comprised of two strapping forts: El Morro (Castillo de los Tres Santos Reyes Magnos del Morro), with its emblematic lighthouse, and La Cabaña (Fortaleza de San Carlos de la Cabaña), a sprawling mini-city of a military bastion famed for its sunset-over-the-Malecón views and legendary cañonazo ceremony.