75. Bolivia - Salar de Uyuni

Salar de Uyuni is the world's largest salt flat. It is 7,522 sq miles, and sits at just under 12,000 feet in altitude.

The salar is a pure white expanse of nothingness. They say when there's a little water, the surface perfectly reflects the sky and the horizon disappears.

The salt from the flats is pretty bad for the car, so we opted for a day tour instead. It was pretty fun.Read more