Southeast Regional Park Nature · Rivas-Vaciamadrid, Área Metropolitana, Madrid Declared in 1994 around the lower courses of the Manzanares and the Jarama, this regional park covers 31,552 hectares spread across sixteen municipalities of the Community of Madrid, among them Rivas-Vaciamadrid, Arganda del Rey, San Martín de la Vega and Getafe, and it protects gypsum cliffs and bluffs, cereal plains, riverside woodlands and banks, and numerous wetlands and lagoons formed from old gravel pits. One of its most emblematic sites is the Cerros de la Marañosa, reaching a maximum height of 698 metres; the area also preserves archaeological and palaeontological sites. Photo: Javier Perez Montes (CC BY-SA 4.0) What to see and do in Rivas-Vaciamadrid