The Marauder's Map is a magical document that reveals all of Hogwarts School of Witchcraft and Wizardry. Not only does it show every classroom, every hallway, and every corner of the castle, but it also shows every inch of the grounds, as well as all the secret passages that are hidden within its walls and the location of every person in the grounds, portrayed by a dot. It is also capable of accurately identifying each person, and is not fooled by animagi, Polyjuice Potions, or invisibility cloaks; even the Hogwarts ghosts are not exempt from this. This is a lightweight nightgown with long sleeves. Fun gold foil Marauders Map print. I would say any young Potter fan would fall in love with this nightgown.