The lighthouse tower was integrated into the existing medieval castle structure in 1853.
The lighthouse focal plane sits at approximately 50 meters above mean sea level.
It is one of the few examples in Spain where a lighthouse was built directly within a medieval fortress footprint.
The masonry incorporates repurposed stone from the town’s original defensive perimeter walls.
The site provides a clear view of the distinct Santa María Church, a prime example of Gothic architecture.
The Santa Ana Castle-Lighthouse, known locally as Castillo-Faro de Santa Ana, is a defensive fortification merged with an active maritime beacon situated on a rocky promontory in Castro-Urdiales. Originally serving as a medieval fortification, the structure was significantly modified in the mid-19th century to incorporate a lighthouse into its defensive walls. The site remains a functional maritime signal, with its light visible to vessels navigating the Bay of Biscay. The complex features thick stone masonry designed to withstand the harsh Atlantic weather and oceanic erosion. It occupies a strategic position overlooking the town’s harbor and the Santa María Church. The current interior spaces often host temporary cultural exhibitions and historical displays. The lighthouse beam operates automatically, guiding ships along the Cantabrian coast.
From the harbor docks looking upward at the castle silhouette against the sunset.
Walk the perimeter of the castle walls for panoramic views of the Cantabrian Sea.
Visit during low tide to observe the geological formations of the cliff base.
Combine your visit with a walk along the adjacent port area.
Attempting to climb the lighthouse tower, which is restricted, or walking near the edge of the unfenced cliff areas.
Occasionally closed for maintenance or during local storm warnings; exhibitions within the castle change seasonally.
