Columbia subject headings:
Architecture, Gothic--Germany--Eifel.
Architecture, Romanesque--Germany--Eifel.
Church architecture--Germany--Eifel.
Eifel (Germany)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Gothic--Germany--Eifel.
Architecture, Romanesque--Germany--Eifel.
Church architecture--Germany--Eifel.
Eifel (Germany)--Buildings, structures, etc.
Princeton subject headings: