Barcelona, city, northeastern Spain, capital of Barcelona Province and the autonomous region of Catalonia, a seaport on the Mediterranean Sea between the Llobregat and Besós rivers. Barcelona is the second largest Spanish city in population and the principal industrial and commercial center of the country. The chief manufactures are textiles, precision instruments, machinery, railroad equipment, paper, glass, and plastics. Barcelona is a major Mediterranean port and a financial and publishing center of Spain.
Barcelona Province, the most populous and industrialized of the Spanish provinces, is mountainous, with fertile plains and a low, sandy coast. Agricultural products include cork, olives, grains, vegetables, grapes, almonds, oranges, and peaches. Cement and textiles are the major manufactures, and lignite and potash are mined.