I had been working on digging some tunnels under our house in Platteville, very much like those in a similar dream I had several months ago (maybe this one or this one?). There were magically lit tunnels large enough for a couple roomies to walk through comfortably side-by side. A couple of these tunnels actually went somewhere so you could use them to get around the neighborhood. As in the other dream, my roomies were helping me deck it out with plywood and drywall (such things help to hold the ceiling up). We had one room down there that was fully furnished and, judging by the look of it, might as well have been a small room in someone's basement. With white walls and green painted shelves. Later, after we had taken a walk down the tunnel and headed outside with some other people (like that Ben+Fizz would know), we were looking at the sky. There was this ring of stars that moved around, and anything that passed through the ring degenerated to water, which, as was recently discovered, was the absolute lowest form of matter.
I think it was by this day that I had pretty much finished re-arranging my room. It's pretty close to the SketchUp model I posted pix of earlier.