Columbia subject headings:
Architecture--Germany--Potsdam--History--19th century.
Architecture--Germany--Potsdam--Pictorial works.
Potsdam (Germany)--Buildings, structures, etc.
Potsdam (Germany)--Pictorial works.
Harvard subject headings:
Historic buildings--Germany--Potsdam--Pictorial works.
Palaces--Germany--Potsdam--Pictorial works.
Potsdam (Germany)--Buildings, structures, etc.--Pictorial works.
Streets--Germany--Potsdam--Pictorial works.
Princeton subject headings: