Columbia subject headings:
Architecture, Byzantine--Congresses.
Byzantine Empire--Kings and rulers--Congresses.
Islamic Empire--Kings and rulers--Congresses.
Islamic architecture--Congresses.
Palaces--Byzantine Empire--Congresses.
Palaces--Islamic Empire--Congresses.
Rites and ceremonies--Byzantine Empire--Congresses.
Rites and ceremonies--Islamic Empire--Congresses.
Harvard subject headings:
Architecture, Byzantine--Congresses.
Byzantine Empire--Kings and rulers--Congresses.
Great Palace of the Emperors (Istanbul, Turkey)
Islamic Empire--Kings and rulers--Congresses.
Islamic architecture--Congresses.
Palaces--Byzantine Empire--Congresses.
Palaces--Islamic Empire--Congresses.
Rites and ceremonies--Byzantine Empire--Congresses.
Rites and ceremonies--Islamic Empire--Congresses.
Princeton subject headings:
Architecture, Byzantine--Congresses.
Byzantine Empire--Kings and rulers--Congresses.
Great Palace of the Emperors (Istanbul, Turkey)
Islamic Empire--Kings and rulers--Congresses.
Islamic architecture--Congresses.
Palaces--Byzantine Empire--Congresses.
Palaces--Islamic Empire--Congresses.
Rites and ceremonies--Byzantine Empire--Congresses.
Rites and ceremonies--Islamic Empire--Congresses.