brandenburg church classicism dome germany Lutheranism potsdam protestant XIX century arch berlin Brandenburger Tor capital column columns gate landmark monumental Quadriga sightseeing statue tourismn baroque belvedere charlottenburg elector enlightment Friedrich III garden Langhans architecture building event Gendarmenmarkt history Konzerthaus music Schauspielhaus theatre italian Nering palace Sophie Charlotte dark doric floodlight floodlighting illumination light night Schadow Victoria cathedral christianity evangelical pray religious television tower amber Frederic III park Deutscher Dom German Cathedral