Montevideo, city, capital of Uruguay and its Montevideo Department, on the Río de la Plata, in the southern part of the country. A spacious community with broad boulevards, it is the nation's largest city, chief port, and its principal economic, administrative, and cultural center. Many tourists visit the city and nearby beach resorts. Landmarks include the Cerro (hill) for which Montevideo (from the Portuguese “Monte vide eu,” “I see a hill”) is named; the mausoleum of José Gervasio Artigas, the Uruguayan national hero; the Cabildo, formerly the seat of the national legislature; and an ornate cathedral (1790-1804). In Montevideo are the University of the Republic (1849), the National Historical Museum (1900), and the National Museum of Fine Arts (1911).

Montevideo was founded by the Spanish governor of Buenos Aires in 1726 to secure the area against Portuguese infiltration from Brazil. It changed hands frequently during the Spanish-Portuguese rivalry of the early 19th century, until, partly through British intervention, it became the capital of independent Uruguay, established in 1828 as a buffer state between Spanish Argentina and Portuguese Brazil. It was besieged for nine years (1843-1851) during Uruguay's civil war but at the same time became one of the principal ports of South America. Large numbers of Europeans, especially Spaniards and Italians, migrated to the city in the late 19th and early 20th centuries. Thereafter, Montevideo continued to grow as a result of internal migration from rural Uruguay to the capital region. Population (2005 estimate) 1,347,888.