Rosario is a city in the center-east of Argentina, about 300 km (190 mi) NW 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 3rd largest city. The city is on the well-known Argentine river of the Parana.
It's called Rosario because of 'Virgen del Rosario', which image remains at the cathedral, at the same place where the original chapel was.
Rosario is famous because of his nightlife, there are many discos that are open to very late, and the people are very friendly and kind. you can always find new friends