Columbia subject headings:
Architecture, Modern--20th century--Exhibitions.
Architecture, Modern--21st century--Exhibitions.
City planning--Environmental aspects--Exhibitions.
City planning--History--20th century--Exhibitions.
City planning--History--21st century--Exhibitions.
Harvard subject headings:
Architecture, Modern--20th century--Exhibitions
Architecture, Modern--21st century--Exhibitions
Architecture--Europe--21st century.
City planning--Environmental aspects--Exhibitions.
City planning--Europe
City planning--History--20th century--Exhibitions.
City planning--History--21st century--Exhibitions.
Land use, Urban--Europe.
Public spaces--Europe.
Princeton subject headings:
Architecture--20th century--Exhibitions.
Architecture--21st century--Exhibitions.
City planning--Environmental aspects--Exhibitions.
City planning--History--20th century--Exhibitions.
City planning--History--21st century--Exhibitions.