Dique, Porto de Son in A Coruña. If it wasn’t for Google Maps, it would be difficult to find Dique beach. Indeed, this small hideaway beach, with just 80 meters of white sand, nearly disappears at high tide. Located near the Castro de Baroña fort among a forest of pine trees, the beach is popular with nudists. Swimmers should be careful in the the water, which is known for its big waves.