The Marble Palace is a significant historical landmark located in Potsdam, Germany, situated on the shores of the Heiliger See within the New Garden park. Constructed between 1787 and 1792 under the orders of King Frederick William II of Prussia, it was designed by architects Carl von Gontard and Carl Gotthard Langhans. The palace served as a summer residence for the Prussian king and is an outstanding example of early Neoclassical architecture in Prussia. Its name derives from the grey and white Silesian marble used extensively in its construction. The building's history includes its use by the Prussian royal family until the end of the monarchy, after which it served various military functions during the 20th century. Following extensive restoration, the Marble Palace now operates as a museum under the administration of the Prussian Palaces and Gardens Foundation Berlin-Brandenburg. The interior showcases period rooms with original furnishings, paintings, and porcelain collections, offering visitors insight into the life and tastes of Frederick William II. The palace is part of the Palaces and Parks of Potsdam and Berlin UNESCO World Heritage Site, recognized for its cultural and historical importance.