Columbia subject headings:
Architecture--Conservation and restoration--Germany--Berlin.
Architecture--Germany--Berlin.
Berlin (Germany)--Buildings, structures, etc.
Berlin (Germany)--Buildings, structures, etc.--Conservation and restoration.
Harvard subject headings:
Architecture--Conservation and restoration--Germany--Berlin.
Architecture--Germany--Berlin
Berlin (Germany)--Buildings, structures, etc.
Berlin (Germany)--Buildings, structures, etc.--Conservation and restoration.
Monuments--Germany--Berlin.
Princeton subject headings:
Architecture--Germany--Berlin.
Berlin (Germany)--Buildings, structures, etc.
Berlin (Germany)--History.