The Protestant Church of Peace (German: Friedenskirche) is situated in the Marly Gardens on the Green Fence in the palace grounds of Sanssouci Park in Potsdam, Germany. The church was built according to the wishes and with the close involvement of the artistically gifted King Frederick William IV and designed by the court architect, Ludwig Persius. After Persius' death in 1845, the architect Friedrich August Stüler was charged with continuing his work.