Ocharan Castle – Cultural Heritage Monument

Engel & Völkers proudly presents, in exclusive representation, the Castillo de Ocharan, one of the most exceptional heritage estates on Spain’s northern coastline.
Designated as a Cultural Heritage Monument (Bien de Interés Cultural, BIC) since 1984 (BOC 11/01/1984) as part of the singular ensemble from the early 20th century: Ocharan Palace, Castle- Observatory, and Gardens, this remarkable architectural landmark was conceived by renowned architect Eladio Laredo and stands today as a masterpiece of eclecticism, artistry and coastal identity.
The main castle, measuring approximately 630 m², unfolds across three elegant levels preserving original materials and period craftsmanship. Grand reception room, a formal dining hall, a unique indoor thermal pool, and a private suite with direct access to the signature tower-lookout offer a rare blend of heritage beauty and residential comfort. From the rooftop terrace, sweeping views extend across the Cantabrian Sea, the coastal skyline and the estate’s protected gardens.
Dominating the grounds is the iconic Clock-Observatory Tower, configured as an independent suite. Its original geometric tilework, sculptural stonework and panoramic rooftop terrace reinforce the architectural singularity of this protected monument.
The estate extends over 19,874 m², encompassing historic gardens, mature landscaping and open green areas that preserve the original scenic character of the protected ensemble. The highlight is an extraordinary natural seawater pool, directly connected to the Cantabrian Sea, an element as rare as it is impressive.
Complementing the main structures, the property includes over 2,000 m² of additional built area across several auxiliary buildings:
- Multi-use Frontón court
- El Merendero, with wood-fired kitchen and terrace
- Casita de las Abuelitas
- Tent
Castillo de Ocharan is a once-in-a-lifetime acquisition: a culturally protected landmark with exceptional architectural identity, unmatched coastal positioning, and premier potential for private residential use, cultural or institutional foundations, or boutique hospitality projects of the highest level.
A truly irreplaceable asset in the European real estate market.

The Castle of Ocharan is located in the central and emblematic area of Castro Urdiales, surrounded by unique buildings leading to the promenade and the historic center. This coastal town combines heritage, nature, and quality of life, standing out for its medieval old town, fishing and sports port, and urban beaches of Ostende and Brazomar. Its privileged location, just 25 minutes from Bilbao and less than an hour from Santander, allows you to enjoy the tranquility of the Cantabrian coast with all urban services at hand. Today, Castro Urdiales is one of the most valued residential destinations in northern Spain, both by national families and international buyers seeking history, sea, and authenticity just a few kilometers from the Basque Country.

Green view, Open view, Water view, Yes, heated, indoor, Private, outdoor