Nothing is better. I have a student – a doctor – who wants to take his wife on a wildlife adventure. She loves the out of doors. I suggested Foz do Iguaçu. These are the waterfalls on the border between Brazil and Argentina. They stretch for seven kilometers. They are amazing!
The Brazilian side of the falls are a good photo op. Lots of cat walks. Great photos – but go early in the morning when the sunlight is low and shining directly on the falls.
Then visit the bird sanctuary just outside the falls national park.
Then you MUST visit the Argentinean side of the falls. It is 200% better than the Brazilian side. You get to walk into the falls. Trails take you up close and personal to the cascadas. Do it.
Here is a tip: Take the boat to the island in the middle of the park (free, included in your park entrance fee) and hike to the far end of the small island. There will be a sign that says “do not cross the rocks.” Cross the rocks. It is not far at all. Just climb over the peak, through the arch. Then you will find a super spectacular pond of water – with a waterfall feeding the pond, and another waterfall emptying the pool. It is amazing. Wear your bathing suit under your clothes or be prepared to skinny dip.
It is heaven. Unbelievable. Although the fish can be a bit aggressive.