Due to gladiator and animal combats held during the Roman era, railings were added to the lower seating areas to protect spectators. Some seats were reserved for local trade guilds such as stonemasons, blacksmiths, and tanners. Additionally, one of the upper rows was designated for worshippers of Serapis, the Egyptian deity.
To the south of the orchestra stands a two-story stage building (proskenion). Only the half-columns in front of the proskenion were made of marble, while the rest of the structure was built from andesite stone.
Some missing parts of the theater were restored during conservation work carried out in the 1990s.
