Cathedral

You have a great attention to detail. However, what I am concerned here is polygonal distribution. First I am not sure if this is a Game model or a CG model. If it's a game model then there is an obvious lack of distributing polygons effectively. It seems that the windows are low poly enough, but the more detailed towers aren't. If it's for a CG, then pump up the polgyon count on those windows and the roof decorations!