Explore Cartagena’s illustrious history and ancient landmarks as you join a guided walking tour, with stops at Conception Castle, the Punic Wall, and other sites. Set out on foot with an informative guide along the city’s picturesque waterfront. Visit Conception Castle, a 13th-century fortress which now comprises intriguing museum exhibits. Travel past magnificent Town Hall Square and view the Punic Wall ruins, the city’s first defensive wall built in the 3rd century BC.