Columbia subject headings:
Castles--Germany--Thuringia.
Palaces--Germany--Thuringia.
Harvard subject headings:
Architecture--Germany--Thuringia--History--17th century.
Architecture--Germany--Thuringia--History--18th century.
Palaces--Germany--Thuringia.
Princeton subject headings:
Architecture--Germany--Thuringia--17th century.
Architecture--Germany--Thuringia--18th century.
Palaces--Germany--Thuringia.