This is an Argentine National Park. Well run, clean, accessible. Some trails or access that have been destroyed by past flooding are still in evidence and intrude on the pristine nature of the place. Often crowds are very heavy and while the park does a good job of managing the large attendance, there are just too many people in most places. In order to preserve the area and for safety, access is strictly limited to constructed trails and areas - no sneaking off into a quite place away from all the hubbub to contemplate the beauty of it all. On the other hand the falls are spectacular in every sense of that word. The park has done a good job of providing access to very good viewpoints so that the falls can be appreciated fully. Most can be seen from above looking down and from below looking up as well as panoramas of large numbers of falls at once. The cost is pretty reasonable with a half price discount for the second consecutive day - however if you come back for a third day, it will cost full price. Argentine residents get a discounted price and residents of the Provence (Misiones) get an even deeper discount. Souvenirs and food/drink inside the park is at tourist prices - in other words very expensive. However, visitors are allowed to bring their own food and drink into the park, which is what we did. Beware the monkeys and/or coates may steal your meal. Signs everywhere warn against feeding the local creatures. There is a free train that helps to get around the park. The pristine jungle feeling is not there, but the waterfalls are magnificent. If you are willing to spring for a somewhat expensive power launch ride, it is really fun with opportunities to come up close enough to the base of some falls to get yourself really drenched. If you come at Christmas (summer in Argentina) like we did, you will definitely appreciate the cool shower! The little boat that take you over to San Martin Island is provided by the park without charge but only runs when the river is low enough. The views from the island are unique and worth it if you have time to go and the boat is running. There are two philosophies about dealing with the heat for a summer visit. It seemed the most widely practiced was to wear as little clothing as possible. Since we are older - with bodies to match - we chose the other approach which was to wear light weight long sleeves and long pants to protect from sun burn and mosquitoes. We were surprised to find that while there are some mosquitoes, they weren't so many as to be oppressive as we had feared.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.