Athens. Greece. View of the central open space enclosed by a elegant Ionic colonnade at the ancient Roman Agora in Athens. The marble columns were unfluted and the courtyard was paved with marble during the time of Hadrian. Dating from the 1st century BC, the Roman Agora is about 100 metres to the east of the Ancient Agora and is complex consisting of a large rectangular open courtyard surrounded by stoas, shops and storerooms.