The initially wooden theatre was replaced with the current stone made in the beginning of the 3rd century B.C. The lower part of the theatre is separated by a frieze. Behind the first line of seats, which was for the honoured spectators, there are 26 lines of seats on the lower department and another 17 lines on the upper, which are separated by eight staircases in seven departments. It could seat roughly 5.500 spectators. In front of the circular orchestra lie the foundations of the stage.