Schloss Wilhelmshöhe

Schloss Wilhelmshöhe
Location in Germany
General information
Type	Palace
Architectural style	Neoclassical
Town or city	Kassel
Country	Germany
Coordinates	51°18′54″N 9°24′58″E / 51.315°N 9.416°E / 51.315; 9.416
Construction started	1786
Completed	1798
Renovated	1968-74, 1994-2000
Client	William I, Elector of Hesse
Owner	Museumslandschaft Hessen Kassel ()
Design and construction
Architect	Simon Louis du Ry, Heinrich Christoph Jussow ()

Schloss Wilhelmshöhe is a Neoclassical palace located in Bad Wilhelmshöhe (), 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 Hessen Kassel (). Since 2013, Schloss Wilhelmshöhe has been part of the UNESCO World Heritage Site Bergpark Wilhelmshöhe.

Beginning in the 12th century the site was used as a monastery. Under Philip I, Landgrave of Hesse 1504-1567 it was secularised and used as a castle. This castle was replaced by a new one from 1606 to 1610 by Landgrave Moritz. The current Neoclassical Schloss Wilhelmshöhe was designed by architects Simon Louis du Ry and Heinrich Christoph Jussow () from 1786 to 1798 for Landgrave William IX of Hesse.

As king of the French puppet state Kingdom of Westphalia, Jérôme Bonaparte renamed it Napoleonshöhe and appointed his Head Chamberlain Heinrich von Blumenthal as its governor, with instructions to supervise extensive renovations. After the Franco-Prussian War of 1870/71, the Prussian King offered the defeated Emperor Napoleon III accommodation there.