Seven-Coloured Earth of Chamarel
One of the problems with rainbows, other than the fact that there's never a pot of gold at the end of them, is that as soon as you try to Instagram one... POOF!... it's gone. If only rainbows were made out of sand that could withstand thousands of years of rain and erosion. Well, guess what rainbow lovers, meet the Seven-Coloured Earth of Chamarel! These rainbow dunes in Mauritius are formed by sand of seven distinct colors -- red, brown, violet, green, blue, purple, and yellow. Even cooler: pick the sand up, put it in a bottle, mix it up -- eventually it'll resettle into the same seven distinct layers. Every time.