Concert Hall Introduction: The Concert Hall was built in the 2nd century AD. It was a meeting place for senior city government officials and also served as a concert hall. There is a high wall at the back of the stand, with entrances on both sides. There is a semicircular space for the orchestra to perform between the stand and the stage. It is a Roman-style building. Its design is modeled after a theater, but it has an extra roof and can accommodate 1,400 people. However, the roof has long since collapsed.