There's waterfall and then there's Iguazu Falls. Damn, this place blows my mind. I thought I have seen enough waterfalls in my life time but Iguazu was so different, so epic that I would say that it is one of the best one in the world. Victoria Falls is one big massive falls with tremendous power but Iguazu is a series of waterfalls scattered around the tropical land of Argentina and Brazil.
It is essential that you visit both sides when you are here. Argentinian side has many more things to do and you can easily spend a whole day there but the Brazilian side, though shorter, give you the oportunity to be even closer to the falls with a bridge that goes right above the "Devil's Throat", a U-shaped waterfall that half of the water in Iguazu flows through. It was quite a sight to behold.