I must insist that in order to have a complete experience of the Iguazú falls it is necessary to see it from both sides of the border (Argentina and Brazil). But the visit to Parque Nacional Iguazú is so wild and full of first hand experiences of the falls. There are also monkeys, coatis, wild birds, lizards and lavish trees and orchids. It is a place you will never forget. Although it is a very wild area, you can take kids and even babies (the trails are adapted for baby strollers). The only excursions which are not suitable for children are the boat or rubber dinghy ones. I have been here three times and I will definitely return. Next time I will remember to take repellent. (I've been bitten by mosquitoes and horseflies).