During the Augustus period, the stoa to the north of the State Agora was converted to a basilica. This was a 160m long building with a wood covered roof.
Later on during the Augustan period column heads were changed from Ionic style to Corinthian style. Some of these columns are still intact. The stoa on which this basilica was built was found to be buried approximately 1.4m below ground. There was another stoa next to the basilica giving access to the building through three separate gates.