 He succeeds Volker Rattemeyer, who ran the museum for 23 years.Under his leadership, in 2007 it was elected by the International Association of Art Critics (Association Internationale des Critiques d' Art (AICA)) as "Museum of the Year".From 1994 to 1997, the Kassel architects Schultze and Schulze completely renovated the rooms of the art collection, from 2003 to 2006 the roofs, the entrance area and the lecture hall and opened up new exhibition rooms of the art collection.