The theater was designed in the 4th century BC. The original 34 rows were extended in Roman times by another 21 rows. As is usual for Greek theatres (and as opposed to Roman ones), the view on a lush landscape behind the skênê is an integral part of the theatre itself and is not to be obscured.
It seats up to 14,000 people. The theatre is admired for its exceptional acoustics, which permit almost perfect intelligibility of unamplified spoken words from the proscenium or skēnē to all 14,000 spectators, regardless of their seating. Famously, tour guides have their groups scattered in the stands and show them how they can easily hear the sound of a match struck at center-stage.