1. Theatron (Audience Seating): The audience sat in a semicircular or horseshoe-shaped seating area called the theatron. The seats were arranged in tiers rising from the orchestra to the top, providing excellent visibility of the stage.
2. Orchestra (Performance Space): The orchestra was a circular or rectangular space located at the center of the theater. It served as the performance area for actors, musicians, and the chorus.
3. Skene (Stage Building): The skene was a building located at the back of the orchestra. It provided a background and backdrop for the performances and housed changing rooms for the actors.
4. Proskene (Stage Front): The proskene was a platform located in front of the skene. It served as the primary acting space and was raised above the orchestra level.
5. Parodos (Side Entrances): The parodoi were two passageways located on either side of the orchestra, allowing actors and the chorus to enter and exit the stage.
6. Thymele (Altar): In some theaters, an altar dedicated to Dionysus, the Greek god of theater and wine, was placed in the center of the orchestra.
7. Deus ex Machina (Crane): Theaters occasionally used a crane-like device called deus ex machina. It was used to lower actors or props onto the stage, creating a dramatic effect or a sense of divine intervention.
8. Stage Decorations: Theaters employed various stage decorations, such as painted scenery, movable props, and costumes to enhance the performances.
9. Acoustics: Greek theaters had excellent acoustics, allowing the actors' voices to be heard clearly throughout the seating area. This was achieved through the careful design and construction of the structures, taking advantage of natural amplification principles.
10. Capacity: Greek theaters were large, with capacities ranging from a few thousand to over 15,000 spectators, making them significant cultural and social centers in ancient Greek cities.