Rising from the Hill of San Lázaro, the Castillo de San Felipe de Barajas in Cartagena, Colombia, is celebrated as the most formidable defensive complex of Spanish military architecture. Constructed under Spanish supervision using African slave labor, this fortress was strategically positioned to dominate all land and sea approaches to the city. Its construction began around 1536, with significant expansions occurring in 1639, 1657, and 1763.
Positioned 41 meters above sea level, you will encounter a series of walls that taper toward the parapet to form defensive bunker patterns, a grand entrance, and a maze of underground tunnels. The site witnessed major historic conflicts, including raids by French privateers and the 1741 battle where Spanish forces repelled British Admiral Edward Vernon. Today, this UNESCO World Heritage Site invites you to explore its historic battlements and intricate subterranean passages, while serving as an extraordinary backdrop for high-level government events and summits.
When visiting, you can wander its expansive grounds and step inside a selection of original tunnels that are safely open to the public.
What to see at Castillo de San Felipe de Barajas
- Formidable military architecture 41 meters above sea level
- Strategic triangular structure flanked by multiple historic batteries
- Complex subterranean underground gallery and tunnel maze
- UNESCO World Heritage Site recognized alongside historic Cartagena
- Site of historic battles against French privateers and British forces
Visiting tips
Keep in mind that while the castle complex is open to visitors, only some of the subterranean tunnels are open to viewing.
How long: 1-2 hours · Best time: Early morning
How to get there & what’s nearby
Castillo de San Felipe de Barajas is easy to reach on Cartagena’s public transport. For where to stay, the weather and full itineraries, see our Cartagena travel guide.
See the full Cartagena travel guide for where to stay, the best time to visit and the top things to do.