The Corridors & Moving Stairwells

Sub-levels - Dankly lit and cold corridors leading to the Potion classrooms, Slytherin common room, Kitchens and the elf quarters. Ground Floor - opposite the doors into the Great Hall, this corridor has at least one classroom down it. A side door in this corridor opens out into the courtyard where the students congregate during break times. First floor - Corridors to Muggle Studies, DADA and History of Magic Classrooms and McGonagall's office. Second floor - Empty corridor with stone gargoyle the entrance to Dumbledore's old office, DADA office and Moaning Murtle's Bathroom. Third floor - forbidden corridor where Fluffy guarded the trapdoor to the hiding place of the Philosopher's Stone and corridor outside the Hospital Wing and Trophy room and Charms classroom.
Fourth floor - The corridor below the prefects' bathroom leads from the nearest staircase to the prefects' bathroom on the floor above and has a tapestry hanging about halfway down the corridor. This tapestry conceals a narrower staircase forming a shortcut that leads down two floors, which contains the trick step that Neville often forgets to jump. The bottom of the staircase is also concealed by a tapestry.
Fifth floor - A statue of Boris the Bewildered stands in one corridor. A statue of Gregory the Smarmy stands in a corridor in the East Wing. Corridor outside prefect's bathrooms. Sixth floor - passageway between bathrooms and marble staircase to seventh floor.
Seventh floor - Corridor - A moving tapestry of Barnabas the Barmy opposite the entrance to the Room of Requirement. Inc. statue of Lachlan the Lanky to the right of the top of the stairs, between the stairs and the Fat Lady's portrait. Location of the gargoyle which guards the entrance to the Headmaster's office.

[