Rosario is a city in the center-east of Argentina, about 300 km (190 mi) northwest from Buenos Aires. It is the main city of Santa Fe Province. As of 2008 Rosario metropolitan area has a population of around 1,300,000 inhabitants, making it Argentina's third-largest city. The city is on the Paraná River.
It is called Rosario because of the Virgin of the Rosary, whose image remains at the cathedral, in the same place as the original chapel.