The urban plan of Olynthos reconstructed by Hoepfner and Schwandner. Note specifically the city blocks, designed according to the Hippodamian system of urban planning.

Olynthos was the main city of the Chalkidian League, (koinon, Κοινόν) and one of the wealthier and most potent cities of North Greece.

Below, a view of the ruins of Olynthos, specifically the Bouleuterion of the city (credit: wikimedia commons).