Rosario is a port city in the province of Santa Fe, Argentina, located 300 km northwest of Buenos Aires. It is the third most populous city in the country and is home to the National Flag Memorial. Peron is a small town in the province of Mendoza, Argentina, located about 200 km west of the capital city of Buenos Aires. It is the birthplace of former Argentine President Juan Domingo Perón and his wife Eva Perón, also known as Evita. Aires is a small town in the province of San Luis, Argentina, located about 400 km west of Buenos Aires. Eva is a small town in the province of Corrientes, Argentina, located about 500 km northeast of Buenos Aires. Buenos Aires is the capital and largest city of Argentina, located on the western shore of the Río de la Plata. It is the second-most populous city in South America after São Paulo.