Columbia subject headings:
Architecture, Ottoman--Turkey--Istanbul.
Drinking fountains--Turkey--Istanbul.
Istanbul (Turkey)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Ottoman--Turkey--Istanbul
Fountains--Turkey--Istanbul.
Istanbul (Turkey)--Buildings, structures, etc.
Princeton subject headings:
Fountains--Turkey--Istanbul.
Istanbul (Turkey)--Buildings, structures, etc.
Turkey--History--Ottoman Empire, 1288-1918.