I do have one question though: have you studied diagrams/pictures of the real Colosseum? I just ask because everything looks right except those stairs, which seem slightly out of place to me. I don't really know what they should look like, because I've never seen pictures inside the Colosseum before, and obviously there must be SOME way to get to the upper levels. I'm just wondering how much research you've done on this. Could you post a diagram of the level and a comparison with a reference? Still looks great.