Chapel of os Mártires Monument · Valga, Caldas, Pontevedra Image of Valga, not of the place itself. A chapel whose original core goes back to the fifth century and which was enlarged in later periods; it is the oldest religious building in the concello and one of the most singular in the lower Ulla. Photo: Adrián Estévez (Estevoaei) (CC BY-SA 4.0) What to see and do in Valga