Castillo de Torremocha dominates the landscape of Santorcaz in eastern Madrid at 800 meters altitude, positioned above a small ravine flowing into the Anchuelo stream. Built in the 14th century over 12th-century foundations, it constitutes the sole surviving vestige of the defensive system surrounding Santorcaz, which included seven wall towers and the Church of San Torcuato. The fortress features a distinctive oval plan with only its southern side straight, reflecting its integrated role within the town's fortifications. Historically serving as an episcopal residence before becoming a prison, the castle notably held Cardinal Cisneros for six years. Currently undergoing restoration with completion expected in 2026, the castle represents medieval ecclesiastical and defensive architecture.