The exotic natural pool on a beach in Cantabria: crystal-clear waters protected from the waves

Northern Spain is one of the best places in the entire country for summer vacations. In addition to its extraordinary natural beauty and stunning beaches, the Cantabrian coast also boasts a treasure trove of beautiful towns scattered throughout the region. In the beautiful village of Islares, part of the picturesque and tourist-friendly municipality of Castro Urdiales, lies a wonder that few know about, but which is a true gem.

On Arenillas Beach, one of the busiest in the area, there's an impressive natural pool where the Bay of Biscay doesn't lash as strongly as it is protected by rock formations. This incredible spot is perfect for swimming while enjoying stunning panoramic views of a unique landscape, making it a perfect day trip if you're spending a few days in the region.

The impressive natural pool of Arenilla

This incredible natural pool is located where the old port once stood. It was built in 1594 next to the Oriñón estuary, although less than two centuries later it fell practically into disuse. Today, it has become one of the best natural pools in Cantabria, as it is protected from the waves, making swimming a truly relaxing experience.

Nestled in a wonderful limestone landscape, which combines with the Cantabrian Sea to form a picture-postcard image, this enclave is a natural treasure protected by the medieval port's spur . However, while the best time to dive in is at high tide, a visit to it is almost obligatory if you're enjoying a day by the sea at Arenillas Beach.

This place looks like something out of a movie, but the reality is that it's less than a kilometer from the town of Isleras, and can be reached either on foot or by car. Therefore, if you have the opportunity, you should dive into its waters to complement an extraordinary getaway through the north of the Iberian Peninsula.

Furthermore, since it's not far from the town of Castro Urdiales (the drive is about ten minutes), after a swim, it's always a good idea to head to this tourist town in Cantabria to enjoy its treasures, as it's one of the most beautiful towns in the entire autonomous community.