It was also very hard to remember where anything was, because it all seemed to move around a lot. The people in the portraits kept going to visit each other and Harry was sure the coats of armour could walk. The ghosts didn’t help, either. It was always a nasty shock when one of them glided suddenly through a door you were trying to open. Nearly Headless Nick was always happy to point new Gryffindors in the right direction, but Peeves the poltergeist was worth two locked doors and a trick staircase if you met him when you were late for class.