Rosario is the largest city in the central Argentine province of Santa Fe. The city is located 300 km (186 mi) northwest of Buenos Aires, on the west bank of the Paraná River. Rosario is the third-most populous city in the country, and is also the most populous city in Argentina that is not a capital. With a growing and important metropolitan area, Greater Rosario has an estimated population of 1,750,000 as of 2020. One of its main attractions includes the neoclassical, Art Nouveau, and Art Deco architecture that has been retained over the centuries in hundreds of residences, houses and public buildings.