Boathouse · Chamber of Secrets · Dark Hall · Deathday Party Hall · Detention escape route · Dungeons · Dungeon cave · Dungeon Corridor · Dungeon Five · Dungeon hall · Dungeon Pit · Dungeon Staircase · Entrance Dungeon · Forgotten Cavern · Hieroglyphic Hall · Hogwarts Basement · Hufflepuff Basement · Kitchens · Lever Rooms · Lost Tunnel · Lower Chambers Corridor North-East · Lower Chambers Corridor West · Lower Chambers Portrait Corridor · Poltergeist Passage · Porticus Circumscriptus · Porticus Periculum · Porticus Imago · Porticus Medius · Porticus Olidus · Potion-Mixing Room · Potions basement · Potions Classroom · Potions staircase · Prowling Passage · Quidditch cave · Room of Doom · Room of Runes · Severus Snape's office · Shop · Slug Pit · Slytherin Boys' Dormitory · Slytherin Duelling Dungeon · Slytherin Dungeon · Slytherin Girls' Dormitory · Undercover route to the Kitchens · Underground Chambers · Vestibule of Mischief · Way to Courtyard

Basil Fronsac · Bloody Baron · Cecilia Gallerani · Elizabeth Burke · Hooky · Mad old man · Mopsus · Old man · Percival Pratt · Salazar Slytherin · Sleeping hermit · Bearded man with book