Columbia subject headings:
Architecture--Conservation and restoration--Germany--Thuringia.
Architecture--Germany--Thuringia--History--20th century.
Architecture--Germany--Thuringia--History--21st century.
Historic sites--Conservation and restoration--Germany--Thuringia.
Harvard subject headings:
Architecture and history.
Architecture--Germany--Thuringia--20th century.
Architecture--Germany--Thuringia--21st century.
Historic buildings--Conservation and restoration
Princeton subject headings: