– Judging by the names, I conclude that they are all named after the main elements of magic. So, one external and one internal are missing. Darkness and air.
-Yes, that's right. Someone wanted to emphasise the magical nature of the school. – Aiden almost snorted. – On the other hand, the Tower of Darkness houses a theological centre. In addition to classrooms, there are many chapels dedicated to various gods. Devout believers visit there quite often. — He shook his head as he stood in front of the door at the bottom of the stairs. — That leaves only the Tower of Air. There, they gave up on the auditorium and converted it into classrooms. That's where they teach arithmetic, navigation, law, and everything else that can't be assigned to the other profiles.
— There must be a lot of that.
—Yes and no. —Aiden opened the door and let the dragon pass. —Contrary to what I said about all the Towers, classes for a given group tend to be held in one room, possibly in an auditorium or an appropriate training area. It is the lecturers who most often circulate around Solvein. For example, my group occupies classroom 346, here on the third floor of the building.
They found themselves on the ground floor, in the corridor where Draco had come to take his exam. The door at the end of the now empty passageway was closed. There was no trace of the other examinees, even though the test was being conducted simultaneously in five lecture halls. Aiden turned towards the Tower of Light.

-Fortunately, during the academic year, you don't have to walk through the entire Solvein, because the entrances on the ground floors of each building are open. For example, here.- The red-haired boy pointed to a side branch of the corridor.- The same is true at the base of each Tower.
-There'll be a lot to remember, - Draco muttered.
-Just stick with your group and you'll be fine.
-At least I won't get lost outside the building, - the dragon tried to joke, but