Castillo de Peñas Negras, situated on a rocky prominence three kilometers east of Mora in Toledo province, originated as a tenth-century Arab fortress that later passed to Christian control following the Reconquista. The castle features a distinctive ship-like floor plan adapted to the irregular terrain, with a central Tower of Homage dividing the main enclosure into two compartments. Historically it served the Order of Santiago and was even used as a prison, famously holding the notorious Cesare Borgia within its walls. Today municipally owned and freely accessible, the fortress remains an atmospheric historical landmark and natural vantage point offering panoramic views across La Mancha's windswept plains and valleys.
