son-doong-cave VietNam - It has room for a skyscraper with 40 floors and it contains both jungle and a river. The Son Doong cave in Vietnam are the largest one in the world and a tour inside this place is something out of the ordinary.
Salar de Uyuni marks the location of the world's largest salt flats, which can be found in southwest Bolivia. This stunning image captures the Uyuni Salt Flats right after rainfall. The salt crystals reflect puffy white clouds like an enormous mirror.