Columbia subject headings:
Harvard subject headings:
Architecture, Byzantine--Turkey--Istanbul--Pictorial works.
Architecture--Turkey--Istanbul--History--Pictorial works.
Istanbul (Turkey)--Antiquities.
Istanbul (Turkey)--Buildings, structures, etc.--Pictorial works.
Princeton subject headings:
Architecture, Byzantine--Turkey--Istanbul--Pictorial works.
Architecture--Turkey--Istanbul--History--Pictorial works.
Istanbul (Turkey)--Antiquities.
Istanbul (Turkey)--Buildings, structures, etc.--Pictorial works.