Castillo de San Felipe de Barajas (Cartagena de Indias, Colombia)

Inscribed on the UNESCO World Heritage List in 1984

"Situated in a bay in the Caribbean Sea, Cartagena has the most extensive fortifications in South America. A system of zones divides the city into three neighbourhoods: San Pedro, with the cathedral and many Andalusian-style palaces; San Diego, where merchants and the middle class lived; and Gethsemani, the 'popular quarter'." Unesco