Bolivia

Average daily budget: $20-35. Bolivia is South America's cheapest country and home to some of its most dramatic landscapes. The Salar de Uyuni (the world's largest salt flat) creates mirror-like reflections during the wet season that look photoshopped — a 3-day tour costs $100-150. La Paz is the world's highest capital city at 3,640m, with a cable car system that doubles as public transit ($0.30 per ride) and offers aerial views of the Andes. Death Road mountain biking costs $60. Meals average $2-4. It's raw, challenging, and unforgettable.