Description

Rio de Janeiro , or simply Rio, is the capital of the state of Rio de Janeiro.

It is the second-most-populous city in Brazil (after São Paulo) and the sixth-most-populous city in the Americas.

Iguazú Falls or Iguaçu Falls are waterfalls of the Iguazu River on the border of the Argentine province of Misiones

and the Brazilian state of Paraná.

Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city,

which is the federal capital and largest city of the nation, Buenos Aires.