روساریو is a city located in the province of Santa Fe in Argentina. It is situated along the western shore of the Paraná River and is known for its significant role in the country's economy and culture. With a population of over a million people, it is one of the largest cities in Argentina. The city is famous for its vibrant arts scene, historical architecture, and as the birthplace of the revolutionary leader Ernesto "Che" Guevara. Additionally, Rosario hosts several universities and cultural institutions, making it an important educational center in the region.