Potions classroom

• large enough to accomodate a double class (about twenty cauldrons)

• "Potions lessons took place down in one of the dungeons. It was colder here than up in the main castle, and would have been quite creepy enough without the pickled animals floating in glass jars all around the walls." (PS8)

• icy cold water pours from a gargoyle's mouth into a basin in the corner

• students can see their breath in this room during the winter months

Snape's office and private stores

If one follows the narrow stone staircase leading from the Entrance Hall to the dungeons, the entrance to Snape's office is halfway down the cold passageway leading from the foot of that staircase (CS5). Snape's office is adjacent to the Potions classroom, or at least close enough that Hermione could slip from one to the other and back without being spotted during a commotion in class during her second year. By Harry's fourth year, Snape had a charm on his office that "none but a wizard could break" which would have prevented Peeves from getting in and meddling with his possessions, although Dobby was able to get in and steal gillyweed from Snape's stores anyway.

Snape is in the habit of keeping the place dimly lit, judging from Harry's visits during his second (CS5), third (PA14), fifth (OP24 and other tutorials), and sixth years. Snape has a fireplace (which is sometimes lit) that is apparently connected to the local Hogwarts Floo network, since he was able to call Lupin (then working at Hogwarts) through the fire, and Lupin was able to travel through the fire to Snape's office.

The walls, which are in shadow, are lined with glass jars, including the wall behind Snape's desk. Each jar contains some potion (differently coloured in different jars) in which is suspended slimy bits of some animal or plant (different ones in different jars). For example, one jar contains a large dead frog suspended in some purple liquid (OP26). Snape also keeps a cupboard in one corner containing his private stores of potion ingredients. Snape also keeps a wall clock, occasionally an extra table, and a chair or two for visitors (HBP24).

Slytherin dungeon common room

• Entrance is a hidden door in a blank stone wall, opens by password

• A labyrinth of corridors separates this entrance from the stone staircase leading up to the Entrance Hall (CS12).

Dungeon Five

• some third years accidentally plastered frog brains all over the ceiling in this dungeon, which suggests that it is used for making potions (CS8)

other dungeons, including one large enough for a Deathday party

kitchens
The Hogwarts kitchens are located directly below the Great Hall and are just the same size. They have high ceilings and a great brick fireplace at one end. Mounds of brass pots and pans are heaped around the walls. There are preparation tables directly below the four house tables in the Hall above, and when the time comes for the food to be served, it is magically transported through the ceiling of the kitchen onto the plates. The kitchens are staffed by over a hundred house-elves. To get to the kitchens, take the door to the right of the main staircase in the entrance hall. Follow the corridor until you come to a painting of a bowl of fruit. Tickle the pear and it giggles and becomes a door handle (GF21).

corridor with door to kitchens

• pictures on the wall, mostly of food

• down a flight of stone steps into a broad stone corridor, brightly lit with torches

• this corridor also leads to the Hufflepuff common room

the Chamber of Secrets and passageways leading to it - far beneath the school, at least partly beneath the lake

the chamber of the Philosopher's Stone and passageways leading to it - far beneath the school

Hufflepuff common room and dormitories

• located down the staircase to the right of the main staircase in the Entrance Hall

Entrance Hall

• Double oak front doors, opening to the west (PA21). Large, cavernous room, lit by torches, with ceiling so high it's barely visible. Wide marble staircase opposite the front doors (east wall) leads up to first floor. Double doors to the right (south wall) lead into the Great Hall. On the east wall are two doors, one on either side of the staircase. To the north of the staircase is a door leading down a flight of steps to the first dungeon level. To the south is a door leading to the Hufflepuff common room and the kitchens. On the left (north wall) is a door leading to a smaller antechamber where First Years wait to be sorted.

• To the right of someone coming down the stairs (north wall) is a door leading down to the Slytherin common room (OP38, also CS12).

• Four giant hourglasses - one for each House - stand in niches in a corner opposite the main doors. Each hourglass is filled with gemstones rather than sand, one gemstone in the lower bulb for each House Point currently held by that House. Gryffindor's contains rubies, Ravenclaw's sapphires, and Slytherin's emeralds (OP28, OP38). Presumably Hufflepuff's hourglass contains some sort of yellow gemstone.

• Flagstone floor (HBP28).

Great Hall

• Vast chamber with an enchanted ceiling that mirrors the sky outside. Four long tables for the four houses. Closest to the doors from the Entrance Hall is Slytherin, then Ravenclaw, Hufflepuff, and next to the far wall, Gryffindor (this order may possibly be reversed, depending on how you orient the room to the entrance hall). The teachers sit at the High Table, a table on a raised platform at the front of the room.

• A door behind the staff table allows a person to enter the Great Hall from outside without going through the main entrance (Hagrid enters this way to the welcoming feast in GF12); it isn't clear if this is the same door as the one leading into the antechamber.

• There are windows into this room from the lawn outside (CS5)

There is a smaller antechamber connected to the Great Hall, door behind the teachers' table, with a fireplace and many portraits (including that of the Fat Lady's friend Violet) off the Great Hall (GF17)

small chamber

• located off the Entrance Hall, opposite the Great Hall

• where first years wait to be sorted

broom cupboard

• located off the Entrance Hall

• Harry and Ron locked Crabbe and Goyle in it (CS12)

• Hermione and Harry hid here while using the Time-Turner to wait for themselves to pass through the Entrance Hall (PA21)

staff room

• long panelled room

• mismatched, dark wooden chairs

• large wardrobe, sometimes inhabited by a boggart

• located off the Entrance Hall (PS16)

• see stone gargoyles (OP17)

corridor

• opposite the doors into the Great Hall, this corridor has at least one classroom down it, Classroom 11 (OP)

• a side door in this corridor opens out into the courtyard where the students congregate during break times (CS)

classroom eleven

• in the corridor leading off the Entrance Hall on the side opposite the Great Hall

• one of several unused classrooms

• Dumbledore arranged for this room to look like the middle of a forest clearing; Firenze, who couldn't easily negotiate the stairs, taught Divination in this room. He could lower the lights and display a starry sky with a wave of his hand. (OP27)

Filch's office

Filch's office is a small room with a single oil lamping hanging from the ceiling. It smells of fried fish. In it are filing cabinets with details of the misdeeds of students. Fred and George have an entire drawer to themselves.

• filing cabinet with records of the misdeeds of students, including an entire drawer for the Weasley twins (CS8)

• chains and manacles (not used these days but kept polished just in case) (CS8)

• cabinet full of confiscated magic items marked "Confiscated and Highly Dangerous." (PA10)

• desk and chairs

• lots of forms to write up malefactors

• smells vaguely of cooked fish

• probably on the ground floor because Filch took Harry "back downstairs" to write him up for befouling the castle, and because the Vanishing Cabinet which Peeves broke directly over Filch's office (CS8) was located on the first floor (OP)

Muggle studies classroom

• to get to her Muggle Studies exam, Hermione stopped at the first floor while Ron and Harry went on (PA16)

Defence Against the Dark Arts classroom

• "(Lockhart) set off back to the castle with Harry, who was wishing he knew a good Vanishing Spell, still clasped to his side. 'A word to the wise, Harry,' said Lockhart paternally as they entered the building through a side door [from the courtyard, so they're on the ground floor]...Deaf to Harry's stammers, Lockhart swept him down a corridor [the ground floor corridor that runs opposite the Great Hall, probably] lined with staring students and up a staircase [so now they're on the first floor]...They had reached Lockhart's classroom and he let Harry go at last." (CS)

• has windows

• had an iron chandelier until Neville was hung from it by his ears by pixies and it broke off the ceiling (CS6)

History of Magic classroom [7]

• blackboard through which Binns enters and exits the room

• Has a window through which Hedwig could enter; the window has thick glass and a narrow ledge (OP17)

• Just up the corridor from Binns' classroom, in the direction of the marble staircase, is a window with a view of Hagrid's cabin (OP17)

McGonagall's office

• up the marble staircase and down a hallway, on the first floor (PS15)

• Her office has a fireplace with a mantelpiece, and the entrance is evidently within easy walking distance of Myrtle's bathroom (CS18). The fireplace can be connected to the Floo Network when necessary (HBP18).

• At least one of her windows overlooks the Quidditch pitch (PA9).

• Some of the corridors along the route from her office to the entrance to Gryffindor Tower have windows overlooking Hagrid's cabin (HBP18).

• To get from the DADA classroom to McGonagall's office, take a corridor from the DADA classroom to the nearest flight of stairs leading down; McGonagall's door is on the left (OP12)

Hospital Wing 1992-1993 [3]

• lots and lots of beds with white sheets

• Madam Pomfrey's office

• privacy screens

• bedpans (Ron once had to scrub them for detention) (PA9)

• moved to the third floor in 1995-1996