When Gilderoy Lockhart was the Defence Against the Dark Arts teacher, this room was filled with pictures of himself. Under Remus Lupin, it contained creatures that were to be used in class. Alastor Moody, who was actually an imposter at the time, filled it with Dark Detectors and Foe-Glass. Dolores Umbridge had pink frilly doilies and china plates painted with gambolling kittens. It is unknown if Snape used it as his office.