Columbia subject headings:
Castles--France--Richelieu--History.
City planning--France--Richelieu--History.
Richelieu (France)--Buildings, structures, etc.
Richelieu (France)--History.
Richelieu, Armand Jean du Plessis, duc de, 1585-1642--Homes and haunts--France--Richelieu.
Harvard subject headings:
Princeton subject headings:
Castles--France--Richelieu--History.
City planning--France--Richelieu--History.
Richelieu (France)--Buildings, structures, etc.
Richelieu (France)--History.
Richelieu, Armand Jean du Plessis, duc de, 1585-1642--Homes and haunts--France--Richelieu.