Columbia subject headings:
Architecture--Italy--Tuscany--History--18th century.
Architecture--Italy--Tuscany--History--19th century.
Harvard subject headings:
Architecture, Modern--17th-18th centuries--Italy--Tuscany.
Architecture, Modern--19th century--Italy--Tuscany.
Architecture--Italy--Tuscany
Architecture--Italy--Tuscany--History.
Building--Italy--Tuscany.
Princeton subject headings:
Architecture--Italy--Tuscany--17th century.
Architecture--Italy--Tuscany--18th century.
Architecture--Italy--Tuscany--19th century.