from Wikipedia Rosario:
Rosario is the largest city in the province of Santa Fe, Argentina. It is located 300 km (187 miles) northwest of Buenos Aires, on the western shore of the Paraná River and has 945,000 residents as of the 2005 census [INDEC].
It has been the third most important city in Argentina since the end of the 19th century because of the growing and important metropolitan area, a large urban department and for being the most important export centre in the country. It also retains the classical and ancient architecture in some residences, houses and public buildings. It is the third largest city in Argentina in terms of area and population.
Rosario is the head city of the Rosario Department and is located at the heart of the most important industrial corridor in Argentina. Its suburbs and several neighboring towns form the metropolitan area of Greater Rosario, with 1,180,883 inhabitants.
The city is a major railroad terminal and the shipping center for northeastern Argentina. Ships reach the city via the Paraná River, which allows the existence of a 34-feet deep port. The Port of Rosario is subject to silting and must be dredged periodically. Exports include wheat, flour, hay, linseed and other vegetable oils, corn, sugar, lumber, meats, hides, and wool. Manufactures include flour, sugar, meat products, and other foodstuffs. The Rosario-Victoria Bridge, opened in 2003, spans the Paraná River, connecting Rosario with the city of Victoria across the Paraná Delta.
Along with Paraná, Rosario is one of the few Argentine cities that cannot point to a particular individual as its founder. The city's patron is the Virgin of the Rosary whose feast day is on October 7). The asteroid 14812 Rosario was named in its honour.†