Confluence of the Sar and Ulla rivers Nature · Padrón, Sar, A Coruña Image of Padrón, not of the place itself. At the foot of the town the Sar gives its waters to the Ulla, shortly before the latter opens out towards the Arousa estuary; the meeting of the two rivers explains the river and port vocation Padrón has had since Roman times. Photo: Luis Miguel Bugallo Sánchez (Lmbuga) (CC BY-SA 3.0) What to see and do in Padrón