Columbia subject headings:
Architecture, Byzantine--Turkey--Istanbul--History.
Building--Turkey--Istanbul--History.
Buildings--Turkey--Istanbul--History.
Istanbul (Turkey)--Buildings, structures, etc.--Catalogs.
Harvard subject headings:
Architecture, Byzantine--Turkey--Istanbul--History.
Building--Turkey--Istanbul--History.
Buildings--Turkey--Istanbul--History.
Istanbul (Turkey)--Buildings, structures, etc.--Catalogs.
Princeton subject headings:
Architecture, Byzantine--Turkey--Istanbul.
Building--Turkey--Istanbul.
Buildings--Turkey--Istanbul--Conservation and restoration.
Istanbul (Turkey)--Buildings, structures, etc.