Columbia subject headings:
Architecture--France--Bigorre.
Bigorre (France)--Buildings, structures, etc.
Castles--France--Bigorre.
Church architecture--France--Bigorre.
Fortification--France--Bigorre.
Harvard subject headings:
Princeton subject headings:
Architecture--France--Bigorre.
Bigorre (France)--Buildings, structures, etc.
Castles--France--Bigorre.
Church architecture--France--Bigorre.
Fortification--France--Bigorre.