Maritime Museum of the Cantabrian Sea

Located next to Los Peligros beach, the Maritime Museum of the Cantabrian Sea is the largest maritime museum on the Bay of Biscay with 2,600 m² of exhibition space. It covers marine biology (aquariums with Cantabrian species), navigation and fishing history, and Cantabria's relationship with the sea since prehistory. Price: 10€ adults, 7€ reduced. Free Tuesdays from 14:00 (booking required). Closed Mondays.