Oh, I've had several dreams of both interesting and weird places. One place I remember particularly well was of a floating island with a city ontop, hovering above a large, circular crater with vast lake in it. The buildings seemed to be be of shimmering marble and were whimsically designed. It was all spectacular to behold. I think artificial sluices were built all around the crater, pouring majestical waterfalls into the massive lake beneath.