This semi-circular structure, known also as the Small Theatre. According to an inscription unearthed, it was built as a bouleuterion (council chamber) around 150 A.D. by Publius Vedius Antonius and his wife FlaviaPapiana.

 

In the Augustan era, the spread of Imperial-Roman cults was by then a fact in many provinces of Asia Minor. The cult of the Emperor was alive in Nicomedia and in Pergamum, together with that of the Goddess Rome.

 

The prytaneion was constructed in the 3rd century B.C. and attained its final shape during the reign of Emperor Augustus. After it was destroyed for various reasons, its columns and some of its other architectural elements were used in the construction of the Scholastika Baths.

 

This is located to the east of Domitian Square, next to the western side of the Agora. With its wide and high arch which supports the triangular pediment and its small pool, it is quite an appealing structure.