Fons, like that multi-colored background. What is it?
Pluton, it is indeed a different take on Monument Valley. Not easy to find. (Monument Valley is so neat it is hard to get that tired of it, but it's always nice to come up with something unique.)
Bjorn, I really like the desert power one. The joshua tree or whatever encroaching on the side makes the photo without adding lots of clutter like having the ground included would. Transmission towers and power lines make neat subjects.