Prepare to be mesmerized by the Salar de Uyuni, a truly otherworldly landscape that feels like stepping onto another planet. You'll find yourself surrounded by a seemingly endless expanse of blindingly white salt that stretches to the horizon. Depending on when you visit, you'll either witness the incredible mirror effect during the rainy season, where the sky is perfectly reflected at your feet, or the vast, geometric patterns of the salt crust in the dry season. Most visitors explore via a multi-day 4x4 tour, as the scale is immense and the environment is harsh, but the unforgettable feeling of peace and surreal beauty makes it an essential South American adventure.