In Guadalmina, near San Pedro de Alcantara, we can visit the ruins of The Vaults (Las Bóvedas) which date back to the third century and were discovered in 1926. Its peculiar construction is still being studied. It is built with solid mortar and has withstood the passing of time and the storms, as it is built next to the beach.

The group of buildings are constructed around a octagonal patio, in its time vaulted over, with a total diameter of 9.75 metres. The centre shows the remains if a resevoir which is also octagonal in shape, and 1.20 metres deep, parallel to the walls.

The upper floor consists of one circular gallery with access to small rooms.

The most probable conclusion about the use of The Vaults is that they were Roman Thermal Baths, although some consider that they were large deposits which collected water and distributed it to nearby aqueducts.