The impressive St. Mary's Church in Mühlhausen with the highest church tower in Thuringia is visible far beyond the city limits. In its function as a Müntzer memorial, museum and meeting place for religion and culture, St. Mary's Church is closely linked to the fortunes of the town and its citizens.

The exhibition areas in the building, which was secularized in 1975 and has since been used as a museum, offer a diverse range of exhibits. For example, a separate area in the chapels is dedicated to the radical reformer and former preacher of St. Mary's Church, Thomas Müntzer.