CASTLES OF SPAIN - Castle of Almodóvar del Río, Córdoba. The castle, sits above the town, on top of a sheer-walled monolith. The castle’s origins date back to Roman times. The actual construction, however, was built by the Arabs in 760. Under the rule of Fernando III it came to the Christians in 1240, under Pedro I and Enrique II it even served as royal residence. Later the fortress was handed to the knightly order of Calatrava and then to the order of Santiago.