Very cool! It reminds me a lot of the (way)underrated game AquaNox 2: Revelation.
The visual style of this picture is very similar to the interiors of the great underwater buildings in the post-apocalyptic future world of the game.
In fact it looks so much like it was made out of that world, I can hardly believe it wasn't. Or was it? (if no, you should definitely try to get your hands on that game!)