Alfonso acceded to the throne of Castille and León at a time of relative political stability, permitting him the luxury of sponsoring and promoting culture. Jews, Christians, and Moslems contributed to an intellectual renaissance in the areas of science, law, history, and literature, in all of which Alfonso el Sabio took an active part. The cathedrals of Burgos, Toledo, and León bear testimony to the fact that during his reign, French Gothic architecture permanently replaced the earlier Romanesque style. The program also covers art in the reconquered areas, where the more splendidly decorated structures were adapted to Christian use. The Royal Chapel of the Mosque in Cordoba—one of the first Alphonsine projects in Andalusia—is used as an example. (25 minutes)