The Marmorpalais (marble palace) was a royal residence in Potsdam, eastern Germany, built on the grounds of the extensive Neuer Garten on the shores of Lake Heiliger See. The palace was commissioned by Frederick William II of Prussia and designed in the early classicist style by the architects Carl von Gontard and (from 1789) Carl Gotthard Langhans, designer of Berlin's Brandenburg Gate.
Read more about Marmorpalais: Description, The Interior Rooms