Upstairs and accessible all day, are François Cuvilliés' Reiche Zimmer (Rich Rooms), a six-room extravaganza of exuberant rococo carried out by the top stucco and fresco artists of the day; they're a definite museum highlight.
Also up here and only accessible in the morning are the Kurfürstenzimmer (Elector's Rooms) with some stunning Italian portraits and a passage lined with two dozen views of Italy, painted by local romantic artist Carl Rottmann.