History is bound to repeat itself which is why it's best to learn what has happened in the past so that we may try to avoid making the same mistakes. This class was designed to teach students their history.

Double oak front doors, opening to the west. Large, cavernous room, lit by torches, with ceiling so high it's barely visible. Wide marble staircase opposite the front doors leads up to first floor. Double doors to the right 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 is a door leading to a smaller antechamber where First Years wait to be sorted.

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. 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

Accessed through a still life painting found near the kitchens; to reach it, you enter a door to the right of the main staircase in the Entrance Hall and down a staircase there. Although it is therefore at dungeon level, it is "as dissimilar as possible" from the Potions classroom. As we have seen in the other common rooms, it is decorated in House colours, which in this case means that there are lots of yellow hangings; like Gryffindor Tower, it has a lot of comfortable armchairs. There are "little underground tunnels leading to the dormitories, all of which have perfectly round doors, like barrel tops"