Spring of os Tres Reinos Curiosity · A Mezquita, Viana, Ourense A spring beside the Penedo dos Tres Reinos whose use was agreed upon for the inhabitants of the three border territories; it is the end point of the trail that climbs up from the hamlet of Cádavos. Photo: Señor Raposo (CC BY-SA 4.0) What to see and do in A Mezquita