The number-two destination on the rise also sits along the Caribbean coast. The Colombian city of Cartagena has a walled historic old town, beautiful colonial architecture, and famous beaches, like Bocagrande. Cartagena’s old town is a UNESCO World Heritage Site. The city is a great place to try ceviche, a South American dish of marinated raw fish or seafood. But, there is more than the historic town and nearby beaches. Tourists can also visit a nearby mud volcano. It is a 15-meter-tall mud bath that locals believe has healing properties.