The 2km-long, soft-blonde Playa Oyambre, 5km west of Comillas, is a sandy dream protected by the Parque Natural Oyambre. It has frequently surfable waves, a couple of campgrounds and a dash of intriguing history as the emergency landing spot of the first ever USA–Spain flight (1929). Waves and wind can be strong: swim only when the green flags fly.
Shutterstock / Roel Slootweg