Lugo (lōˈgō) [key], city (1990 pop. 81,493), capital of Lugo prov., NW Spain, in Galicia, on the Miño River. The city is the processing and trade center for a fertile agricultural area. It has well-preserved Roman walls (3d cent. B.C.), a 12th-century cathedral (restored), and a baroque city hall (1738).