This occurred for a while in the late 1980’s. Again it is a composite as the dream evolved over time.
I am traveling northwards, overland, through a forest. I come to a creek that has been changed into a canal and moat. On the other side is the wall of a deserted castle. I move in. It has huge stone rooms, but is unfurnished. Later some other join me and we occupy about 5 rooms in a small part of the castle. We have simple furnishings in the large rooms. The roofs are particularly tall at about 30 feet.