Church of la Purísima Concepción de Los Molinos Monument · Los Molinos, Cuenca del Guadarrama, Madrid A church of 1580 of austere Herrerian workmanship in mountain granite, accompanied by the chapel of San José, of 1713, and that of El Carmen, from the 1940s; it presides over a municipality whose name comes from the flour mills on the River Guadarrama. Photo: Dirección General de Turismo. Consejería de Economía e Innovación Tecnológica. Comunidad de Madrid (CC BY 3.0 es) What to see and do in Los Molinos