Columbia subject headings:
Architecture--Europe.
Civilization, Modern--21st century.
Europe--Buildings, structures, etc.
Europe--Civilization.
Harvard subject headings:
Architecture--Europe
Civilization, Modern--21st century
Europe--Buildings, structures, etc.
Europe--Civilization
Princeton subject headings:
Architecture--Europe.
Civilization, Modern--21st century.
Europe--Buildings, structures, etc.
Europe--Civilization.