Basement

Located above the dungeons, but still beneath the grounds of the school, the basement is markedly cooler than the other levels of the school. The Hufflepuff Common room and the school's kitchens can both be found here.

Ground Floor

Hogwarts's main floor, the ground floor contains the largest open spaces in the entire castle. It is home to the Great Hall, and has entrances to the various courtyards located in Hogwarts's interior, as well as several other rooms with varying purposes.