San Felipe de Barajas Fort, a UNESCO World Heritage site in Cartagena, Colombia, offers a fascinating journey into colonial military history. While primarily accessible by foot involving slopes and stairs, offering limited accessibility for wheelchairs, it's easily reachable by taxi or public transport. Visitors can explore independently using informational plaques, but a guided tour is highly recommended for in-depth historical context, especially regarding its complex tunnel systems and strategic design, often available for an additional fee at the entrance. The fort is open year-round, but an early morning or late afternoon visit is advised to avoid Cartagena's intense midday heat and crowds; wear comfortable shoes, bring water, a hat, and sunscreen as it's very exposed. Expect an entrance fee of approximately COP 25,000-30,000, with guides costing extra, and plan for a visit duration of 1.5 to 3 hours to fully appreciate its immense structure and panoramic city views.