Cartagena, known in the colonial era as Cartagena de Indias, is a city and major port on the northern coast of Colombia in the Caribbean Coast Region. In 1984, Cartagena's colonial walled city and fortress were designated a UNESCO World Heritage Site. If you visit the Downtown area of the city, you can admire the varied architecture, mainly a colonial style, but republican and Italian style buildings, such as the Cathedral's bell tower, can be seen. Near Cartagena you can also visit Las Islas del Rosario, these islands are one of Colombia's most important national parks. Most of the island can be reached in an hour or less from de city docks.