La Tour de garde
The Watchtower of El Berrueco (Spanish: "Atalaya de El Berrueco"), also known as the Watchtower of Torrepedrera (Spanish: "Atalaya de Torrepedrera") is a watchtower of Islamic origin located in El Berrueco, Spain. It is situated close to the El Altazar dam, atop a 1030 m hill in the Sierra de Guadarrama. It was declared "Bien de Interés Cultural" in 1983.