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Poppelsdorf Palace is a Baroque building in the Poppelsdorf district of Bonn, western Germany, which is now part of the University of Bonn.Design and constructionThe 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. Clemens wanted a maison de plaisance that would be near his remodeled Bonn Palace one-half mile to the north. There was to be a canal between the two, following the example of the Palace of Versailles and the Trianon de Marbre.wintertime view of Poppelsdorf Palace from Poppelsdorfer Allee.De Cotte himself never travelled to Bonn to inspect the site, and on 24 May 1715 Clemens wrote to him: "I received your project for my Maison de Poppelsdorf, which pleased me infinitely, and I know nothing more beautiful or better convceived, but we are now obliged to consider the site on which it must be built."No drawing exists of the plan for De Cotte's first project, but letters and subsequent plans indicate that it was square with two axes of symmetry at right angles to one another. It consisted of four two-storey wings surrounding a circular inner court with an arcaded gallery on its circumference. Clemens considered the plan too ambitious and asked de Cotte's assistant in Bonn, Benoît de Fortier, to revise the plan, reducing three of the wings to one storey, but leaving the garden wing with two. Clemens wrote to de Cotte: "I realized that it would be quite useless to erect so large a building on that site, which is but a cannon shot from town…. For the most part my retinue returns to the city at night, and I keep near me only those who are absolutely necessary to serve me."