Which preposition to use with foyer

of Occurrences 10%

[Illustration: The foyer of the Opera.]

behind Occurrences 1%

She dared not return to her room, but sat out the night in a dark foyer behind a half-closed storm-door.

et Occurrences 1%

Le manifeste se termine par les paroles suivantes: «Défendez de toutes vos forces vos foyers et la Serbie».

Which preposition to use with  foyer