Castell d'Aitona, also known as Castell del Moro, originates from Islamic times when it belonged to the Moorish lordship of Lleida. In 1120, the alcaid ibn Hilal ceded it to Count Ramon Berenguar III, and it was definitively incorporated into Christian territory between 1145 and 1149 during the conquest campaigns. By 1212, it became the center of the barony of Aitona under the Montcada lordship, later transferring to the barons of Xiva in 1485. The fortress features Islamic architecture with a walled enclosure and two conical towers. Recent restoration phases have added a pedestrian access ramp and viewing platform, transforming it into a major attraction, particularly during the region's celebrated spring flowering season.