Arrive at either the Brazilian or Argentine airport where you will be met and transferred to the hotel.: Spend the next 3 nights in Foz do Iguaçu, Brazil, exploring this tri-border region where Brazil, Argentina, and Paraguay meet at the junction of the Parana and Igussu rivers. The focus, however, will be the magnificent Cataratas do Iguaçu, or Iguassu Falls.