Gryffindor Tower, Hufflepuff Basement, Ravenclaw Tower, Slytherin Dungeon were the four houses at Hogwarts School of Witchcraft and Wizardry in the movie Harry Potter.
Houses at Hogwarts were both the living and learning communities for its students. Each year's group of students in the same house shares the same dormitory and many classes. The houses compete throughout the school year, by earning and losing points for various activities. The house with the most points wins the House Cup.
