Columbia subject headings:
Architecture--Italy--History--19th century.
Architecture--Italy--Turin.
Harvard subject headings:
Architecture, Modern--19th century--Italy--Turin.
Architecture, Modern--20th century--Italy--Turin.
Architecture--Italy--Turin--History.
Turin (Italy)--Buildings, structures, etc.
Turin (Italy)--Description and travel.
Princeton subject headings:
Architecture, Modern--19th century--Italy--Turin.
Architecture, Modern--20th century--Italy--Turin.
Architecture--Italy--Turin.
Buildings--Italy--Turin.