Honour had just been following behind the 'Reverend Sister' in another one of the Rookery's ordinary, rough-hewn, round-walled corridors, and all of a sudden the drab grey rock gave way to a colorful tile mosaic. Then, rounding a corner alongside the Royal Engineer, it opened up into a long, opulently decorated, rectangular foyer that wouldn't be out of place in any noblepony's Canterlot mansion. 