Banks of the Umia river in Caldas Nature · Caldas de Reis, Caldas, Pontevedra A wooded corridor that accompanies the river on its way through the spa town, with walks among centuries-old trees and pools where the Umia stills before continuing towards the ría of Arousa. Photo: Iago from Galicia (CC BY 2.0) What to see and do in Caldas de Reis