The castle was in the beginning a hunting lodge bought by Maximilien II. In 1695, Johann Bernhard Fischer von Erlach was assigned to draw the plans of a summer imperial residence: the planned building was to be built on the model of Versailles at the top of a hill where today the Gloriette is held. The final version which goes back to 1749, appreciably reduced, is the work of the architect of Maria-Theresa, Nikolaus Pacassi who made a rococo palace of them. The building has 1441 rooms.