Castro-Urdiales, located on the northern coast of Spain, offers a blend of historical, cultural, and natural attractions that appeal to a variety of visitors. One of the key highlights is the Castillo de Santa Ana, a 16th-century castle that overlooks the harbor. Its strategic location provides a glimpse into the town's maritime history and offers scenic views of the coastline.

The Church of Santa María is another significant landmark, known for its Gothic architecture and beautiful interior. This church reflects the town's rich religious history and serves as a center for local community events. Visitors often appreciate the intricate details of its façade and the peaceful atmosphere inside.

For those who enjoy the outdoors, the beaches of Castro-Urdiales are inviting. Playa de Brazomar and Playa de Ostende are popular spots for sunbathing and swimming, providing a relaxing environment along the Cantabrian Sea. The promenade along the coast is ideal for leisurely walks, with opportunities to enjoy local seafood at nearby restaurants.

Exploring the historical center is also rewarding, where one can wander through narrow streets lined with charming buildings, cafes, and shops. The town's vibrant fishing port is a lively area where visitors can observe local fishermen at work and sample fresh seafood from the market.

Outdoor enthusiasts may appreciate the natural surroundings, including nearby trails and the scenic landscape of cliffs and greenery. These areas are suitable for hiking and offer a chance to experience the region's flora and fauna.

Castro-Urdiales also hosts several cultural events throughout the year, reflecting its traditions and community spirit. These events provide an opportunity to engage with the local culture and enjoy regional cuisine.

Overall, Castro-Urdiales presents a mix of historical sites, beautiful natural scenery, and a lively atmosphere, making it a pleasant destination for those looking to explore a less commercialized part of Spain.