Columbia subject headings:
Harvard subject headings:
Architecture, Domestic--Europe--Congresses.
Architecture, Medieval--Social aspects--Congresses.
Architecture, Renaissance--Social aspects--Congresses.
Interior architecture--Europe--Congresses.
Palaces--Europe--Congresses.
Princeton subject headings:
Architecture, Domestic--Europe--History--Congresses.
Architecture, Medieval--Congresses.
Architecture, Renaissance--Congresses.
Interior decoration--Europe--History--Congresses.
Palaces--Europe--History--Congresses.