the entrance that i did was based on a picture some fancy pantsy house that.... i can't seem to find anywhere anymore.... crap, i wanted to use it as a lighting reference, i guess i'll have to do it by scratch. but yeah, the rest are more or less original products. if i was to do a full building, though, i'm pretty sure i'd have to spend an hour or so staring at pictures of buildings because otherwise it'd just be a funny looking cube.