This agora measures 160 by 56m and was first established in the first century AD. The state monitored the religious and political meetings held here, and was considered a semi-sacred place. As with many agoras there was a square temple in the center. The temple was decorated at the top by figures of Odysseus' Polyphemos and his adventures. Later the Pollio fountain was located on the western edge of the agora. The agora was brought to its latest configuration in the time of Theodosius (379-395 AD).
There were two porches on the north and east sides.