The city theatre was built in the 3rd cent. BC and remained in use until the 4th cent. AD. It was used as a venue for spectacles and political assemblies and was connected with the city’s historical events.

It is made up of the koilon (auditorium), divided into 11 sections (kerkides), the orchestra, the skene (stage) and the epitheatre (upper section). The koilon is supported by a strong retaining wall; two staircases led the spectators to the upper tier, while a ramp led to the lower one. Six thrones for distinguished spectators stood around the orchestra. The original stage was made of wood, but was later replaced by a movable scenic structure that was moved on wheels and kept in a skenotheke. In the 2nd cent. AD a three-storey stone-built stage was constructed, following the Roman standards. Inscriptions of liberated slaves have been preserved on the theatre’s masonry, along with symbols engraved by the craftspeople. A new city quarter was built at the site in the early Christian period.