Greek theater
Open-air structure, often built on a hillside, where theatrical performances were staged during antiquity.
entrance for the public 
tiers 
Stone benches arranged in tiers and used to seat the audience.
entrances for the actors 
Doors used by the actors to go to and from the backstage area and the stage.
scene 
Building that enclosed the stage and served as a backstage area for performers.
orchestra 
Space where the choir performed.
stage 
Platform where the actors performed.