Columbia subject headings:
Architecture and state--Europe.
Architecture, Medieval.
Hohenstaufen, House of--Influence.
Holy Roman Empire--History--Hohenstaufen, 1138-1254.
Harvard subject headings:
Architecture and state--Europe.
Architecture, Medieval.
Hohenstaufen, House of--Influence.
Holy Roman Empire--History--Hohenstaufen, 1138-1254.
Princeton subject headings:
Architecture and state--Europe.
Architecture, Medieval.
Hohenstaufen, House of--Influence.
Holy Roman Empire--History--Hohenstaufen, 1138-1254.