When I saw the thumbnail of this photo, at first I thought it was a painting because the colours were too clear in some way. However, when I enlarged it, it became clear that it was some kind of photo.
I then discovered that it’s an example of a technique called High Dynamic Range, better known as HDR. (More examples in this group.)
I’d love to try it myself, but the Gimp doesn’t seem to be able to do it, and I doubt there are other programs on Linux that even get close.