Cartagena's old city is its principal attraction, particularly the inner walled town, consisting of the historical districts of El Centro and San Diego. It's one of finest examples of preserved colonial architecture in the Americas, packed with churches, monasteries, plazas, palaces and mansions with their famous overhanging balconies and shady patios.

　　The best way to experience the Old Town is to wander in leisurely fashion, savoring the architectural details, street life and local snacks along the way. Nighttime adds a whole different dimension.