The City of Towers
Medinthil was once one of the Three Great Cities of Magic, before it was destroyed in the horrors of the Night War.
Before that it was home to the Covens, powerful magical factions that believed that the development of magic, specifically focusing more on Hemomancy, Curses, and Demonic Bindings. They were one of the most successful enemies of the Night Court, and were considered the equals of the prestigious Academy.
Knowledge of what happened behind the mighty walls of the City of Towers is almost unknown, but anyone could tell you that they were a dangerous and secretive bunch. The Five Towers of Magic are considered impossible by even the most extreme standards, and the fact that even a century after it was abandoned the city remains untouched speaks of the terrible power made to forge it.