Fairy Pools on the Isle of Skye, Scotland [incorrect; see update]
Is Scotland a different planet or something?
(This seems to be infrared photography or heavily modified in PS, but it’s still very cool.)
Update: So it appears this is actually a photoshopped version of Shotover River in New Zealand. Another reason to never trust anything on the internet. I assumed it was inferred photography, but it could also just be someone adjusting the colors :)