Columbia subject headings:
Architecture--Germany--Regensburg.
Art--Germany--Regensburg.
Regensburg (Germany)--History--Pictorial works.
Harvard subject headings:
Art, German--Germany--Regensburg.
Princeton subject headings:
Architecture--Germany--Regensburg.
Art--Germany--Regensburg.
Church buildings--Germany--Regensburg.
Regensburg (Germany)--Buildings, structures, etc.