Training Grounds tower

The Library Tower is one of Hogwarts Castle's many towers and overlooks the Viaduct Entrance. As it's name suggests, this tower is home to the Library and also possibly the Ravenclaw Common Room.

In the first two film adaptions, this tower has five turrets: four smaller ones at the corners and a circular one one the top.

From the ''Prisoner of Askaban" film onwards, the tower became a simple square tower with one tall turret on the the top.

Appearances

 * Harry Potter and the Philosopher's Stone (film)
 * Harry Potter and the Chamber of Secrets (film)
 * Harry Potter and the Prisoner of Azkaban (film)
 * Harry Potter and the Goblet of Fire (film)
 * Harry Potter and the Order of the Phoenix (film)
 * Harry Potter and the Order of the Phoenix (video game)
 * Harry Potter and the Half-Blood Prince (film)
 * Harry Potter and the Half-Blood Prince (video game)