If you really want to challenge yourself with an adventure, head over to one of the most astounding places in the entire world: the Amazon rainforest. There are a few ways to get there — including through Manaus, Brazil; Iquitos, Puerto Maldonado; and Cusco, Peru — and each requires an investment of your time. But once you're there, you'll be fully immersed in the rain forest's glory.
It's best to go with a very experienced tour guide who can help you navigate the territory safely. From piranha fishing on a river boat to pink dolphin sighting to wet hikes where you may encounter tarantulas, howler monkeys, and sloths, there's no shortage of adventure.