Going to Iguaçu Falls was the highlight of the trip for me. The falls were amazing. If you've seen the movie The Mission or Indiana Jones and the Kingdom of the Crystal Skull, then you have seen parts of the falls. In real life, the view was absolutely stunning. The falls separate Brazil from Argentina - most of the falls are on the Argentinian side, but you get a great view from the Brazilian side. As you travel along the walkway, you see more of the falls and larger cascades. Finally you end up in the Garganta do Diabo, the Devil's Throat (see the rainbow picture below).
Legend has that the river god split the river with his tail - he was angered that a young girl to be sacrificed to him was rescued and taken away by the boy that loved her. In revenge, the river god split the river and turned the girl and boy into a rock and a tree - at least that's what I got from the film at the Visitor's Center - it was in Portuguese, after all!
