Walls of Carlos III

The Walls of Carlos III form a stone fortification system that encloses the harbor and old town of Cartagena, defining the city's outline. The structure includes thick ramparts, bastions, and passages that offer views across the Mediterranean and the surrounding urban areas.

Construction began in 1771 under King Carlos III and was completed in 1792 by architects Mateo Vodopich and Sebastián Feringán. The fortification was built as a response to maritime threats and the strategic importance of protecting the port during the late 1700s.

The fortification marks the boundary between the old city and the Mediterranean, shaping how locals and visitors move through and perceive Cartagena. Walking along the top reveals how the walls continue to frame daily life and public gatherings in this port town.

The walls are accessible during daylight hours, with several sections open to the public for walking and exploration. Guided tours are available to explain the architectural design and how the fortification functioned militarily.

A lesser-known aspect is that the walls feature angled bastions specifically designed to deflect cannon fire from attacking naval forces. Walking along them reveals how the geometry was calculated to protect the entire perimeter from bombardment.