The Odeon was originally a place for the city council’s assembly, or Bouleuterion. Shortly after its construction in the second half of the 2nd century AD, a stage (skene) was added. Later it was used as both a theatre and court room. Façade and walls were covered with marble. A stoa with nine columns was added in front of the building. Coloured marble was used to decorate the stage front, and a large Medusa mosaic covered part of the floor. That mosaic is sometimes displayed, but during my visit it was not visible.