The castle was built specifically to defend against North African pirate raids on the coastal fishing villages.
The archaeological remains on-site confirm the area was a significant Roman production center for garum, a fermented fish sauce.
Portions of the Roman villa floors, including original mosaics, are preserved within the fortress grounds.
The site includes a well-preserved Roman necropolis that reveals funerary practices from the late Roman imperial period.
The fortification is strategically positioned on a promontory that has served as a human settlement site since the Phoenician era.
Castillo de la Duquesa is an 18th-century defensive fortification situated on the site of a former Roman settlement near the mouth of the Pedregal River. Commissioned by King Charles III in 1767, the fortress was designed to protect the coastline from Barbary pirate incursions. The structure features a large courtyard, two towers, and thick masonry walls characteristic of Spanish coastal military architecture. Archaeological excavations at the site have unearthed remains of a Roman villa, a fish-salting factory, and necropolises dating from the 1st to the 5th centuries AD. The castle currently houses a local cultural center and archaeological museum displaying artifacts recovered from the immediate surroundings. Visitors can view historical mosaic fragments and pottery remnants integrated into the site's layout. The fortification stands directly overlooking the Mediterranean Sea, providing an unobstructed view of the coastline between Estepona and Gibraltar.
The elevated stone parapet facing the Mediterranean Sea provides the clearest view of the castle walls against the coastline.
Visit during the low-tide period to better observe the nearby Roman salt-processing vat remains on the beach.
Check the local municipal calendar before visiting, as the courtyard is occasionally used for small public cultural events.
Combine your visit with a walk along the adjacent Senda Litoral coastal path.
Do not attempt to access the ruins during heavy rain, as the outdoor archaeological pathways can become slippery.
The archaeological site may close on public holidays and Mondays; it is advisable to check local municipal announcements for seasonal event closures.
