See one of the greatest displays of nature, ever!
You absolutely have to travel to the Bolivia Salt Flats! We just recently traveled there and were totally blown away by how much better it was in real life than in the pictures we've seen from fellow backpackers.
The salt flats are in Uyuni, Bolivia and spread out for miles and miles on end. The picture are incredible and we even had the fortune of seeing it while it was raining. It was like two skies laid on top of each other.
We would totally recommend going. A backpacking trip to South America isn't complete without one!