Siresa is a beautiful village with a church said to be the oldest in Aragon. Dating from the nineth Century, San Pedro was once part of a monastery. The valley above Siresa consists of pasture and forest below limestone cliffs. Mountain walks from the valley can be taken to the summits of Aguerri and Castillo de Acher. The best starting point is at Selva de Oza, north of Siresa.
