Columbia subject headings:
Church architecture--Turkey--Istanbul.
Church buildings--Turkey--Istanbul.
Istanbul (Turkey)--Buildings, structures, etc.
Harvard subject headings:
Church architecture--Turkey--Istanbul.
Church buildings--Turkey--Istanbul.
Church decoration and ornament--Turkey--Istanbul.
Princeton subject headings:
Church architecture--Turkey--Istanbul.
Istanbul (Turkey)--Buildings, structures, etc.
Orthodox Eastern church buildings--Turkey--Istanbul.