Okay, this map is seriously starting to drive me crazy. I've been wanting to find the entrance to the gray building again, but it's the ONE thing I can't seem to find. I spent half an hour just looking for it and never found it. I did, in fact, manage to pass by just about everything else in Guts World about five times, though.
Does anyone know where it's located? Or just the relative direction you should head in to find it? It's too bad there's not a world map of this place...