Schloss Wilhelmshöhe is a Neoclassical palace located in Bad Wilhelmshöhe (de), a part of Kassel, Germany. It was built for Landgrave Wilhelm (William) IX of Hesse in the late 18th century. Emperor Wilhelm II made extensive use of it as a summer residence and personal retreat. Today, the palace houses the art gallery Gemäldegalerie Alte Meister, part of Museumslandschaft...