" An edifice is more than a house and less than a City, though it may resemble a house from the outside and a city from within. From without, an edifice may seem self-contained and finite; from within, it may well extend beyond lines of vision, both spatially and temporally. In almost every possible way, edifices manifest a principle central to the description of most physical structures in fantasy: there is always more to them than meets the eye. "

― John Clute , The Encyclopedia of Fantasy