Columbia subject headings:
Alpes-Maritimes (France)--Description and travel.
Castles--France--Alpes-Maritimes.
City walls--France--Alpes-Maritimes.
Fortification--France--Alpes-Maritimes--History.
Harvard subject headings:
Alpes-Maritimes (France)--Description and travel.
Castles--France--Alpes-Maritimes.
City walls--France--Alpes-Maritimes.
Fortification--France--Alpes-Maritimes--History.
Princeton subject headings:
Alpes-Maritimes (France)--Description and travel.
Castles--France--Alpes-Maritimes.
City walls--France--Alpes-Maritimes.
Fortification--France--Alpes-Maritimes--History.