Oia on the Cyclades island of Santorini is in essence what most people imagine when they think of Greek towns.
Whitewashed houses snug against a cliffside dominated by the blue domes of a church. Oia is that typical image made reality and is stunningly picture postcard perfect.
Oftentimes, a lake is pink from the presence of algae that produce organic pigments that give off a pink hue. Other lakes, like the famous Lake Retba in Senegal, get their beautiful hues from a very high concentration of salt. Pink lakes can be found across all corners of the globe. Below, we look at some of the world's most noteworthy examples.