Columbia subject headings:
Harvard subject headings:
Church buildings--Europe--Congresses.
Church buildings--Italy--Congresses.
Hermitages--Europe--Congresses.
Hermitages--Italy--Congresses.
Monasteries--Europe--Congresses.
Monasteries--Italy--Congresses.
Princeton subject headings:
Hermitages--Europe--Congresses.
Hermitages--Italy--Congresses.
Monasteries--Europe--Congresses.
Monasteries--Italy--Congresses.