North Tower

The North Tower is the location of the Divination Classroom and Sybill Trelawney's Office at Hogwarts School of Witchcraft and Wizardry and is where Professor Trelawney has resided for the past 15 years. Sir Cadogan's portrait is hung here. The Divination Staircase is located in this tower. The Room of Runes is located near here.

Behind the scenes

In the films, the North Tower is the tower to the right of the Clock Tower at one corner of The Quad.
In the films, the set used for the spiral staircase that leads up to the Divination Classroom, is also used for the Defence Against the Dark Arts Staircase in the film adaptation of Harry Potter and the Goblet of Fire.
In Lego Harry Potter Years 1-4, the North Tower has a courtyard.
In the films and later video games, this tower is known as the Divination Tower.
The North Tower is seen standing right beside the Hospital WIng Tower in the Film adaptions of: Harry Potter and the Goblet of fire and Harry Potter and the Order of the Phoenix, It is also seen standing behind the main Tower
In the Video game adaption of Harry Potter and the Order of the Phoenix the North Tower is somewhat near the Astronomy Tower, being on the Highest Towers of the Castle.