An enormous tower that has been around for many, many millenniums. It contains volumes of dangerous books, many dangerous magical artifacts, and many trials and cloisters made to help push a magician to the absolute fullest potential possible.
Since the sealing of the Tower of Wizards, there hasn't been a true Magus in in 2000 years, as half the requirement needed to become one was completely brought to a halt. However, since it's release, the tower has seen a few new acolyte magus grace the tower thanks to the very few faithful Grand Magus that managed to slow their aging to a snail crawl.