Teos, which was established in the most narrowed place of Urla isthmus extendig from north to south, is in the Sıgacık village of Seferihisar in Smyrna today. Teos has a significant place in both political and religious terms in ancient period. The city, where was settlement from Archaic period to Roman times, is one of the twelve Ion cities. Herodotos counted Teos between the Ion cities with Ephesos, Kolophon, Lebedos, Klazomenai and Phokaia and stated that these cities used a different language than the other Ion cities. 1 Teos, which is known as the city of God Dionysus, earned its reputation with the Union of Artists of Dionysus. Artists had many privileges owing to this union, even they had equal conditions with the city in political terms. Altough these political rights caused problems about the administration of Teos, the union contributed to city economically and provided protection of presence of the city until the mid-Roman period.