Banks of the Guadarrama in Batres Nature · Batres, Comarca Sur, Madrid Image of Batres, not of the place itself. Almost three quarters of the municipal district falls within the Regional Park of the middle course of the River Guadarrama and its surroundings, a corridor of riverside groves and cliffs over which the Spanish imperial eagle and the black vulture fly. Photo: Eynar (CC BY-SA 3.0) What to see and do in Batres