Argentina - Iguazu

Paid a premium to stay at the Sheraton, which gives far better access to the park, definitely the right call. Very impressive waterfalls, though not quite on the same level as Patagonia for me. Didn't go to the Brazil side, but the Argentine side clearly had the better up-close views. Wouldn't sacrifice other destinations to see it, but still very cool if you've got the time for it.