Columbia subject headings:
Palaces--San Marino--San Marino.
Palazzo Valloni (San Marino, San Marino)
San Marino (San Marino)--Buildings, structures, etc.
Harvard subject headings:
Architecture--San Marino--San Marino.
Art--San Marino--San Marino.
Palaces--San Marino--San Marino.
Palazzo Valloni (San Marino, San Marino)
San Marino (San Marino)--Buildings, structures, etc.
Valloni family--Homes and haunts--San Marino--San Marino.
Princeton subject headings:
Palaces--San Marino--San Marino.
Palazzo Valloni (San Marino, San Marino)
San Marino (San Marino)--Buildings, structures, etc.