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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.

The Gemäldegalerie Alte Meister is an art gallery housed in the Schloss Wilhelmshöhe in Kassel in Germany. It is based on the collection of William VIII, Landgrave of Hesse-Kassel.