Columbia subject headings:
Architecture--Human factors--Europe.
City planning--Europe.
Plazas--Europe.
Public spaces--Europe.
Harvard subject headings:
Princeton subject headings:
Architecture--Human factors--Europe.
City planning--Europe--History.
City planning--Europe.
Plazas--Europe--History.
Plazas--Europe.
Public spaces--Europe--History.
Public spaces--Europe.
Space (Architecture)--Europe--History.