The Temporary Defence Against the Dark Arts Classroom was used by Professor Quirrell between the years 1991 and 1992 while the third floor corridor was out of bounds. It has four pillars and in the middle a pedestal for the teacher. The classroom entrance is around the Transfiguration Courtyard.
The classroom
In the 1991–1992 school year, the Defence Against the Dark Arts teacher was Professor Quirinus Quirrell. He used a different classroom because the third floor corridor was forbidden. It was located on the first floor. The classroom smelled strongly of garlic, said to be protection against a vampire he'd met in Romania and feared was coming back to get him. They have covered the Curse of the Bogies and how to treat werewolf bites.