Cartagena is a vibrant coastal city in Colombia, known for its well-preserved colonial architecture, colorful streets, and rich history. Encircled by ancient walls, the historic center is a UNESCO World Heritage site, featuring landmarks like the Castillo San Felipe de Barajas and the stunning Cathedral of Cartagena. The city also boasts beautiful beaches, lively nightlife, and a diverse culinary scene, making it a popular destination for travelers seeking culture and relaxation.