The Unseen University (UU), located in the city of Ankh-Morpork and centred around the 800-foot Tower of Art, the tallest building on the Disc, it is the premier magic academy on the Discworld. The UU is staffed by a faculty composed of mostly indolent and inept old wizards. The head of Unseen University is the Archchancellor, currently Mustrum Ridcully.