theater
noun
°A place or building, consisting of a stage and seating, in which an audience gathers to watch plays, musical performances, public ceremonies etc.
""The theater is not merely the meeting place of all the arts, it is also the return of art to life." — ()"
°A region where a particular action takes place; a specific field of action, usually with reference to war.
"His grandfather was in the Pacific theater during the war."