Are you a Harry Potter fan? Then you?ll want to get this Harry Potter Houses Crests 1,000-Piece Puzzle. Harry Potter fans know that Hogwarts is divided into four houses, each bearing the last name of its founder: Godric Gryffindor, Salazar Slytherin, Rowena Ravenclaw and Helga Hufflepuff. The Houses at Hogwarts were both the living and learning communities for its students. Throughout the school year, the houses would compete, earning and losing points for various activities.