The Antique Temple is a small round temple in the west part of Sanssouci Park in Potsdam. Frederick the Great had the building constructed to house his collection of classical works of art,[1] antique artifacts, coins and antique gems. Carl von Gontard created the building in 1768/69 near the New Palace north of the Central Alley, as a complement to the Temple of Friendship situated south of the Alley. Since 1921 the Antique Temple has been used as a mausoleum for members of the House of Hohenzollern and is not open to the public.