Acuña Spa Monument · Caldas de Reis, Caldas, Pontevedra In 1812 the priest Pedro Acuña y Malvar laid the first stone of a bath house designed by the architect Melchor Prado y Marino; the present building, from the beginning of the 20th century, still draws on the town's thermal waters. Photo: Iago from Galicia (CC BY 2.0) What to see and do in Caldas de Reis