Castle of the Bishops of Sigüenza

The Castle of the Bishops of Sigüenza is located in Sigüenza in the Province of Guadalajara in central Spain. With foundations dating back to the 5th century, it was extended by the Moors and retaken for the Christians by Bernard of Agen in 1123.
The origins of the fortifications in Sigüenza go back to the Celtiberians who inhabited the right bank of the river in the final centuries B.C. The Visigoths built a small castle in the 5th century above the town. The Moors built a large fortified castle or alcazaba in the early 8th century to defend the area against the Christian kings of Leon and Castile. It was enclosed by a defensive wall providing an area known as the medina. In 1124, the castle was retaken by Bernard of Agen allowing Simón Girón de Cisneros to build an episcopal palace there. In 1298, the castle was taken by the troops of Alfonso de la Cerda during the battle against Ferdinand IV of Castile, the boy king, but was defended by the bishop's vassals. In the 15th century, the castle was strengthened by the bishops to protect it from attacks from Aragon and Navarre.

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