Cestona (officially Zestoa ) is a town located in the province of Gipuzkoa , in the Basque Country , known for its natural beauty, historical heritage, and thermal spa tradition. It lies in the Urola River valley, surrounded by mountains and landscapes characteristic of inland Gipuzkoa.

The town is especially famous for the historic Cestona Spa , one of the most renowned thermal establishments in Spain. Its mineral-rich waters have attracted visitors since the 19th century, making the municipality a prominent wellness and health destination.

Among its main attractions are the nearby Ekain Caves , declared a World Heritage Site by UNESCO for their exceptional Paleolithic cave paintings, considered among the most important in Europe.

Visiting Cestona allows you to enjoy nature, heritage and relaxation in a peaceful environment, making it one of the most attractive destinations in the interior of Gipuzkoa .