The one-storey, gabled late Baroque building, together with the Piarist church and the high school, form a central courtyard complex. The entire convent was completed by 1769. It was a military hospital during the Napoleonic War. From the autumn of 1944, it was also used for military purposes, as a result of which the building and its furnishings were extensively damaged. In 1950 the state took the convent from the Piarists and set up an office there. In 1956, the building was damaged and subsequently converted into small apartments, the former refectory being used by the church archives. After renovation work between 1974 and 1979, the latter institution took over the whole building.
