In 1541 elector Otto Henry converted to the new Lutheran protestantism, and from 1542 the Salzburg church painter Hans Bocksberger der Ältere lavishly decorated the chapel with painted ceiling vaults and galleries in the latest antique-style Italian manner.
The picture program not only thematized the decisive role of Christ as divine guarantor of grace, the central lutheran doctrine.
Because of the financial difficulties and bankruptcy of Otto Henry in 1544, the construction of the west wing of the castle took a long time.
The impressive east wing was rebuilt in 1665 by Philip William, Elector Palatine in the Baroque style and complemented with two round towers.
Today the castle houses a gallery of baroque paintings, the museum is under supervision of the Bavarian State Picture Collection.