Castle of Onda

Castle of Onda, known as the 'castle of three hundred towers,' rises at 284 meters above sea level in Onda, Castellón, commanding an area of approximately 25,500 square meters. Built on ancient Iberian and Roman foundations, Muslims expanded this fortress from the 10th century until its renown peaked in the 13th century. Surrendered to King Jaime I the Conqueror in 1238, it subsequently passed to the Order of the Temple. Today, though largely ruined, visitors can explore the complex walls, fully restored main gate towers, a small museum, and scattered remains. The castle embodies layers of cultural occupation and medieval military architecture across nearly a millennium.