Columbia subject headings:
Architecture, Modern--20th century--Exhibitions.
Architecture, Modern--21st century--Exhibitions.
Cities and towns--Exhibitions.
Harvard subject headings:
Architecture, Modern--20th century--Exhibitions
Architecture, Modern--21st century--Exhibitions
Cities and towns--Exhibitions.
Princeton subject headings:
Architecture, Modern--20th century--Exhibitions.
Architecture, Modern--21st century--Exhibitions.
Cities and towns--Exhibitions.