Salar de Uyuni

At 4,086 square miles, Salar de Uyuni in southwest Bolivia holds the record for the largest salt flats in the world. In fact, so flat are the flats that the U.S. Geological Survey found that elevation variations across the entire area were less than one meter. It is the flattest place on the planet, and it is so stunningly featureless that you can see the curvature of the Earth there. Needless to say, this provides an opportunity to create what might be considered the planet s largest mirror, a place for the sky and earth to collide in dizzying illusions. (We wonder if the moon catches glimpses of her own reflection there.)