This is an open square next to the Holy Harbour. It is one of the most important markets of a Hellenistic city, set with large granite plates, many with holes for the fixing of supports of shelters. The Gallery of Philippos and a small Ionic temple dedicated to Hermes are on the northern side, while arrays of shops and workshops lie on the eastern and southern side. At the centre lie the foundations of a square and a circular monument dedicated also to Hermes, the god of trade, surrounded by bases of votives depicting bankers, sea captains and tradesmen. Last quarter of the 2nd century B.C.