The city is built around a historic walled castle that tops a hill. The pub is built at the base of the hill, and, it turns out into the hill. It is a honeycomb of rooms, many natural caves with supple, curving walls and ceilings.
I'm writing this on the fly without benefit of the Internet--which has been damned elusive here in the Midlands. (Burton, rich with history, has fallen on hard times.) anyway, forgive the errors where you find them.