Columbia subject headings:
Castles--Conservation and restoration--Germany--Sondershausen.
Schloss Sondershausen (Sondershausen, Germany)
Sondershausen (Germany)--Buildings, structures, etc.
Harvard subject headings:
Castles--Conservation and restoration--Germany--Sondershausen.
Music-halls--Conservation and restoration--Germany--Sondershausen.
Schlossmuseum Sondershausen
Sondershausen (Germany)--Buildings, structures, etc.
Princeton subject headings: