Poteidaia was founded around 600 B.C. from Corinthian settlers. In the Persian Wars it played an important role, while its apostasy in 432-31 B.C. from the A' Athenian Alliance constituted one of the reasons for the Peloponnisian War. Repeated conquests from the Athenians and the Spartians followed as well as its final desolation in 356 B.C. from Philippos B'. In 316-15 B.C. Kassandros founds in the same place a new city, Kassandria, which prospers in all the hellenistic and roman period.
From a crowd of retrieving excavations, that the IST' E.P.K.A holds., there were revealed ancient layers with remarkable ceramics and building relic as well as classic season graves of Athenian clergy. By the hellenistic and roman Kassandreia are saved departments of fortification, of the building web and the cemeteries, with most important recent discovery the one-chamber Macedonian grave.