Columbia subject headings:
Archaeology, Medieval--Germany.
Architecture, Medieval--Germany.
Castles--Germany.
Excavations (Archaeology)--Germany.
Fortification--Germany.
Germany--History--Franconian House, 1024-1125.
Harvard subject headings:
Castles--Germany--History.
Fortification--Germany--History.
Princeton subject headings:
Archaeology, Medieval--Germany.
Architecture, Medieval--Germany.
Castles--Germany.
Excavations (Archaeology)--Germany.
Fortification--Germany.
Germany--History--Franconian House, 1024-1125.