Zamora (thämōˈrä) [key], city (1990 pop. 63,436), capital of Zamora prov., NW Spain, in Castile-León, on the Duero River. It is a communications and agricultural marketing and processing center. Because of its strategic position, control of the city was contested during the Middle Ages, first between the Christians and Moors, then between León and Castile. Parts of the medieval fortifications are still preserved. There is a fine 12th-century Romanesque cathedral.