If you need to send someone a letter, you’ll find your owl in this round tower. The floor of the owlery is covered in owl droppings. Upon perch after perch, you’ll find different types of owls. The school itself lets students take their owls to send to their fathers, mothers, friends and family.

To enter the North Tower, it is necessary to climb a ladder on the seventh floor through a trapdoor in the ceiling. The North Tower contains Sybill Trelawney's residence and one of two Divination classrooms. This classroom is at the base of the North Tower and is a round room with walls lined with shelves (they hold teacups, crystal balls, and decks of cards), small round tables, armchairs, and pouffes. The classroom also has an oppressive fire with a copper kettle that gives off heavy fumes.

Located near the charms classroom is the Clock Tower. This large tower faces the front golden gates of the school. A pendulum at the bottom of the tower swings back and forth, as the hands move at the top. This is the perfect place to study, since it is usually quiet.