Pamukkale hot springs travertine pools (Turkey)
Most of the travertine terraces are now in a pretty bad shape due to mass tourism and there is no way to take a good photo from the official perimeter. I had to go a long way around the springs area (out of the perimeter) and hike my way up to the springs from the fields below it in order to get this photo.
For more information about this place, read: en.wikipedia.org/wiki/Pamukkale