In side are remains of a Roman theatre with a capacity of almost 20 million viewers. It was built in the middle of the II century A. D. In the construction are the elements that distinguish it from other theatres built before. It is constructed not as the Greeks — on the hillside, and in the Roman style — on flat ground, the seat holding on vaulted arches, arches themselves — to the Foundation. The audience was part of it, through the cloisters and up into the number of the stairs. Scene and vaults were decorated with statues and tiles. All that remains today is the masks of Tragedy and Comedy, broken head Jellyfish scattered around the stage.

In Roman times there were gladiatorial fights with predatory animals, as well as mock sea battles, for which the stage was filled with water. For security purposes around the stage wall was built with a height of 1, 5 m. In V-VI centuries, the theatre became the Christian Church.

Near the theater in a semicircular building is ancient public toilet for 24 seats with sewage.