4-Day Iguassu Falls Tour. Spend 4 days exploring Iguassu Falls, enjoying the views from both the Argentinian and Brazilian sides. Enjoy engaging and informative commentary from your local guide while you trek around the falls to the various scenic viewpoints. Visit Itaipu Dam, which provides hydroelectric energy for Brazil, Argentina and Paraguay. Round-trip transportation to Cataratas Airport and 3 nights' stay at a 3-star hotel is included. Book this Tour and Save 10%! 4-Day Iguassu Falls Tour.