Brazilian Side of Iguassu Falls and Itaipu Dam Full-Day Sightseeing Tour from Puerto Iguazú. Pair a tour of Brazil's Iguaçu National Park with a visit to Itaipu Dam during this full-day sightseeing tour from Puerto Iguazú. Cross the border from Argentina into Brazil to take a guided tour of the Brazilian side of Iguassu Falls, including the best views of Devil's Throat. Head over to Itaipu Dam to view the biggest hydroelectric power plant in the world. Book and Save 10%! Brazilian Side of Iguassu Falls and Itaipu Dam Full-Day Sightseeing Tour from Puerto Iguazú.