The late Gothic westwings (the Burgstock with its tower and its decorated bay window and the Zwingerstock), which were altered under Duke Sigismund have been preserved. After destructions in World War II the castle was reconstructed. Portions of it (Lorenzistock, Pfisterstock and Brunnenstock) were redeveloped in post modernist style to serve as offices and luxury apartments in 2005/2006, very much to public dismay. The old vaulted cellar dating back to around 1300, the oldest in Munich, with an exhibition on the history of the "Kaiserburg" can be visited in the Old Court.