Poppelsdorf Palace (German: Poppelsdorfer Schloss) is a Baroque building in the Poppelsdorf district of Bonn, western Germany, which is now part of the University of Bonn.he design of a new structure to replace the old ruined castle of Poppelsdorf commenced in 1715 at the request of the owner, Joseph Clemens, Archbishop-Elector of Cologne, who engaged the French architect Robert de Cotte.
