In Argentina , the most famous carnival celebrations are held in the Argentine Mesopotamia and the North-West. Gualeguaychú in the east of Entre Ríos province is the most important carnival city and has one of the largest parades, with a similar afro-American musical background to Brazilian or Uruguayan Carnival. Corrientes is another city with a lively carnival tradition (and is also the "National Capital of Carnival") which involves the chamamé music, a kind of polka , and large parades at the Carnival weekends. In the North-West, Carnival is influenced by indigenous traditions, above all in the valley towns of Humahuaca and Tilcara . In all major cities and many towns throughout the country, Carnival is also celebrated, but less famous than in the above mentioned places. source: wikipedia