Castillo Ducal de Arcos | Source: Texts: Ayuntamiento de Arcos de la Frontera. Photos: Destino Cádiz.
The Ducal Castle of Arcos de la Frontera has over ten centuries of history.
During the Arab domination it functioned as a fortress or a military citadel and its construction is prior to the 11th century. After the reconquest it became the residence of the Dukes of Arcos and several reforms were undertaken which have given it its current appearance.
It is now a private residence and is not open to the public.