Located next to the river Pas, the Puente Viesgo Spa Resort has been exploiting a spring of unique mineral-medicinal waters since Roman times, declared of public utility in 1869. With therapeutic properties for cardiovascular, respiratory, rheumatological and psychosomatic ailments, these hypothermal waters spring from the earth at 33.8ºC and today form part of a modern authorised health complex, where health and wellbeing go hand in hand in the heart of nature.