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.