Castle of Chinchilla is a 15th-century fortress dominating the La Mancha plains, restored by Juan Pacheco, Marquis of Villena, atop an earlier Arab stronghold. The castle featured formidable steep walls, six corner towers, and a 16-meter-deep moat, exemplifying medieval defensive architecture. Historically notable for imprisoning César Borgia, son of Pope Alexander VI, the castle was declared a Cultural Heritage site (Bien de Interés Cultural) in 1931 and retains visible remains of the Keep, defensive gates, and sections of its stone walls, offering glimpses of Iberian and Roman architectural layers beneath its medieval structure.
