It was constantly the centre of the city (700 B.C. – 400 A.D.) with places of political gatherings, galleries, sanctuaries, fountains etc. In this Agora, at the shrine of Zeus Hyetius, the kings who campaigned against Thebes took a vow to win or to die.
At the statue of Mechaneus Zeus, the Argeians, when they campaigned against Troy, took the vow to capture the city or die, since the god indicated how they could capture it (Trojan Horse). It was so spacious that it became the battlefield, where Pyrrhus fought Antigonos.