An auditorium or playhouse were performances are held.
Theatre
Scenery
The walls, furniture, trees, etc., used on stage during a play.
House Lights
House lights provide light on the theater's seats and aisles for the audience.
Stage
The part of the theatre where the performance is performed.
A painted cloth hung at the back of a stage as part of the scenery.
Backdrop
The lights that shine in the different areas of the stage and auditorium.
Lighting
A raised seating area inside of the auditorium that extends on top of the seating area below.
Balcony
Light gauzy material used as a lightweight curtain.
Scrim
Wings
The sides of the stage offstage left and offstage right.
Aisle
Passage between the seats
A door in the stage floor to a room below the stage area used for effects.
Trap
An area of a stage located downstage of the curtain wall and upstage of the orchestra pit.
Apron