Columbia subject headings:
Cairo (Egypt)
Citadel (Cairo, Egypt)
Harvard subject headings:
Cairo (Egypt)--Buildings, structures, etc.
Cairo (Egypt)--Guidebooks.
Cairo (Egypt)--History.
Citadel (Cairo, Egypt)
Citadel (Cairo, Egypt)--History.
Islamic architecture--Egypt--Cairo
Princeton subject headings:
Citadel (Cairo, Egypt)--History.
Islamic architecture--Egypt--Cairo.