El Castillo de Arcos de la frontera (Spanish: Castillo de Arcos de la Frontera) is a castle located in Arcos de la Frontera, Spain. It was declared Bien de Interés Cultural in 1993. References Bien de Interés Cultural landmarks in the Province of Cádiz Castles in Andalusia Buildings and structures completed in the 11th century Buildings and structures completed in the 15th century