Aisonia was named after Ison, one of the three sons of the king of Iolkos Kreteas and Tirones, who, according to mythology, founded the Thessalian city of Aisona, near today's Sesklo. Eisona married Polymedis and acquired a son, Jason, who led the Argonaut Campaign.

The Municipality of Aisonia emerged from the unification of the neighboring communities of Dimini and Sesklo, which have become world-renowned for their two prehistoric settlements. The objects that have come to light from the excavations in these settlements illuminate the Neolithic Age in the Gulf of Pagasitikos Gulf and Thessaly in general.

Visit the most ancient settlements in Europe in the Municipality of Aisonia, a short distance from the city of Volos.