I was bored of making this, so i decide to make a final pic…
it’s not my original idea, but i like it (original http://www.mcescher.com)
It’s nice, great lighting!
The faces around the inside of the archways would benefit from being set smooth in my opinion. Other than that it’s a great job.
Its pretty cool - the bare wall on the right is a bit … lacking though
Great work on the lighting-
Cpt Hollister I love it. I think it’s great! You could almost say it was done by Escher himself. Very professional looking work. 
That lighting is fantastic, you give us some insight as to what light settings you used?
Man, I dont see how people make this stuff in 3D. It seems so hard to do :-?
lighting settings: yafray GI (full, high, cache) and 8 lamps lighting important places from background
PS: sry 4my english