The Marmorpalais (or Marble Palace) is a former royal residence in Potsdam, near Berlin in Germany, built on the grounds of the extensive Neuer Garten on the shores of the Heiliger See (lake). The palace was commissioned by King Friedrich Wilhelm II (Frederick William II of Prussia) and designed in the early Neoclassical style by the architects Carl von Gontard and Carl Gotthard Langhans. The palace remained in use by the Hohenzollern family until the early 20th century.