A large window occupies the front of the tower and to the left, the chimney of the Fireplace of Arcanis’s room. Out on the back, and not shown, Two sliding french doors opening up to a balcony provide sweeping vistas of the entire city of Canterlot. The Tower is also soundproofed (using a different material other than asbestos) and the windows reinforced to prevent shattering and the infiltration of noise from the clocktower beside it.
This is meant to be another hint at the identity of this sorcerer character i devised. That being the fact that Wizards usually tend to live and study in Towers. A high tower also conveys a sense of isolation from “normal” people, which the magician can use to study in peace.