Well if we put it that way Tiroth, then I'll say that I see that all the rooms can change location around the relatively set hallway structure. Except the imporant things like the cafeteria and library and such can't move. The doors are themed as to what they contain inside. The halls are stone, marble, and the like.

...Umm... I think that's all the main bits.

EDIT: I'm very general, so that I can be flexible, and change details if I need to.