9. Lake Hillier, Australia

Lakes come in an array of blue hues and murky browns… But have you ever seen one in this shade of pink? Scrap that. Have you ever seen a pink lake? Possibly not, yet Lake Hillier in Western Australia has been around for two centuries! Scientists are still trying to get to the bottom of the reason for this natural beauty and, so far, the main theory is bacteria. Suddenly, that bubble gum pink doesn’t seem so attractive…

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