Watchtower of El Berrueco

Spain, Spain

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The Watchtower of El Berrueco, also known as Torrepedrera, is a well-preserved Islamic watchtower from the 9th or 10th century located in El Berrueco, Community of Madrid, Spain, near the El Atazar dam atop a 1,030-meter hill in the Sierra de Guadarrama.

Built during the emirates of Muhammad I or Abd al-Rahman III, it formed part of a Muslim defense network monitoring Jarama River waterways and communication routes toward the Somosierra pass, signaling threats to nearby Uceda Castle against Christian incursions in the Middle March of Al-Andalus.

Featuring a circular ashlar stone design with irregular cylindrical walls tapering from 1.58 meters thick at the base to 1.05 meters at the top, a solid ground floor, and second-floor access 2.25 meters high, it was declared a Bien de Interés Cultural in 1983 and remains accessible on private land.