Having had access to a lot of the behind-the-wall and above-the-ceiling spaces while working on the paging system, and poring over plans and blueprints, and confirmed by seeing pictures of the skeleton after they started to tear off the skin, I can state that it was the most screwed up mess of "tack this on to that" building construction I've ever seen. There was a hallway that ran on the 5th floor from the theater at one end to the cafeteria at the other that had at least a dozen square turns in it where they would move this room this way and that room that way to make space for each new area needed by some department or other. Nothing was in a straight line. It was maddening.