An curved arrow pointing right. At a staggering 4,086 square miles, Bolivia's Salar de Uyuni is the biggest salt flat in the world. During the rainy season, it essentially turns into a giant mirror.

In the heart of southern Bolivia lies a mysterious train graveyard, where the skeletons of British steam locomotives and rail cars rust away on the edge of the world's largest salt flats.

Until we start sending commercial flights to the moon, the Kachi Lodge on Bolivia’s Uyuni Salt Flats might be the most otherworldly vacation you can take. Opened in May at the foot of a volcano ...