The Walled City of Cartagena is a historic district located in Cartagena, Colombia. It was founded in 1533 and is known for its well-preserved colonial architecture, vibrant streets, and rich history. The city was fortified with walls to protect it from pirates and invaders, making it a significant military stronghold during the colonial period. Today, the Walled City is a UNESCO World Heritage Site, attracting tourists with its colorful buildings, plazas, and cultural heritage. Visitors can explore landmarks such as the Castillo San Felipe de Barajas and the Clock Tower, which showcase the city's historical significance and architectural beauty.