The fortifications were built by order of King Alfonso III of Asturias to block the Ulla river passage to Compostela.
The stone inscription 'Castellum Honesti' gave the towers their name and signaled their importance as a Christian stronghold.
The site was abandoned in the 15th century as the Archbishop's military influence waned.
Archaeological digs have uncovered 12th-century Romanesque architectural elements within the masonry.
The surrounding marshes served as a natural moat, preventing siege engines from reaching the base of the walls.
Remains of a small chapel dedicated to Saint James (Santiago) exist within the complex grounds.
The site was declared a Historical-Artistic Monument in 1970.
Torres do Oeste are the remains of a defensive fortification complex situated at the mouth of the Ulla River in Catoira, Galicia. Constructed in the 9th century, the site served as the 'Castellum Honesti' to defend Santiago de Compostela against Viking and Saracen pirate incursions. The site originally consisted of seven towers, of which two partially preserved structures remain today. These fortifications were strategically vital for the ecclesiastical authority of the Archbishopric of Santiago. The location is an active archaeological site where stone walls, subterranean foundations, and structural ruins are exposed to the Atlantic elements. Excavations have revealed evidence of continuous occupation and structural modification spanning from the Roman period through the Middle Ages. The site is positioned on an estuary marshland, subject to tidal shifts that periodically alter the surrounding landscape. The area is also the site of the annual Viking Landing festival, which commemorates historical defensive victories.
The elevated vantage point looking back toward the estuary with the two standing towers in the foreground.
Wear waterproof footwear, as the grounds often become muddy and uneven due to proximity to the estuary.
Visit during low tide to see the full extent of the stone foundations that are otherwise submerged.
Bring sun protection, as the site offers minimal shade across the open marshland.
Attempting to walk through the marshy perimeter during high tide, which can result in trapped pathways.
Open year-round, though access to specific interior sections may be restricted during ongoing archaeological surveys.
Respect the archaeological ruins by remaining on marked paths; climbing on the stone walls is strictly prohibited.
