Columbia subject headings:
Architectural photography--Portugal--Pictorial works.
Mascaro, Cristiano.
Portugal--Pictorial works.
Harvard subject headings:
Architectural photography--Portugal--Pictorial works.
Mascaro, Cristiano
Portugal--Pictorial works
Princeton subject headings:
Architectural photography--Portugal.
Photography, Artistic.
Portugal--Buildings, structures, etc.--Pictorial works.
Portugal--Pictorial works.