This classroom is where Defence Against the Dark Arts class is taught. An iron chandelier hung from the ceiling, as well as a Dragon's skeleton. On one end of the classroom stands a projector that is activated by magic. Several desks and tables can be found in the classroom as well as some sets of large windows.

Students who suffer mishaps during the school year are sent or brought to the hospital wing for treatment. The hospital wing is well equipped to deal with all manner of magical and mundane injuries, from broken limbs to regrowing lost bones.

This classroom is where Muggle Studies classes are taught, and there's a small office connected to it which holds an office for the Muggle Studies Professor.

This classroom is where History of Magic classes are taught. The subject is taught by Professor Cuthbert Binns, a ghost, who is widely regarded by almost all Hogwarts students as the most monotonous and boring teacher in existence.

The Gryffindor Head Office is positioned on a corridor which may be accessed by climbing the large staircase in Hogwarts' Entrance Hall.

It has been out of order ever since a student named Myrtle was killed. Myrtle has haunted the bathroom ever since, leading it to be a place most students do not want to enter.

This storeroom is located in the Tapestry Corridor, and this is where Ezra A. Morris stores his private supply of potions and potion ingredients. It is one of two known potions' store rooms in the castle; this being his private store; the other being the student store cupboard. The students cupboard is located in the dungeons.