Münster Castle was the former residence of the Bishop of the Prince, and was built with richly decorated facades between 1767 and 1787 as a three-wing complex designed by Johann Conrad Schaun. Today, the castle is used by the administration of the University of Münster, and in the castle square. Three times a year, the fantastic annual The Sind theme park festival attracts thousands of visitors, and the plaza also houses the university's central auditorium building, which is constantly used for conferences and concerts.