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