Combine two great sightseeing excursions on this cross-border day trip from Puerto Iguazu to the Brazilian side of Iguassu Falls and the Itaipu Dam. First, enjoy a guided sightseeing tour of Iguacu National Park and get up close and personal with the majestic Devil’ s Throat. Then, head over to Itaipu Dam and explore the largest operational hydroelectric power plant in the world.