Woah! I'm in the middle of a pen/ink piece of a trojan horse, and the setting was basically the same. Downward-up view of the horse at night, mostly silhouette, with the city walll behind it, and a moonlit sky behind. Other than the direction the horse is facing (mine is facing left), the similarities are crazy.
Very nice picture!
Although the camera didn't take the pic as I had intended, you get the idea when you see it.