Columbia subject headings:
Harvard subject headings:
Architecture, Modern--19th century--Europe.
Architecture--Europe
Capitals (Cities)--Europe.
Cities and towns--Europe--History--19th century.
City planning--Europe--History--19th century.
Europe--History--1789-1900.
Princeton subject headings:
Architecture, Modern--19th century--Europe.
Architecture--Europe.
Capitals (Cities)--Europe.
Cities and towns--Europe--History--19th century.
City planning--Europe--History--19th century.
Europe--History--1789-1900.