The prehistoric settlement of Sesklo was built on the Kastraki hill and in the area around modern Sesklo. It was first inhabited in the middle of the 7th millennium. In the middle of the Neolithic period (5th millennium) the settlement spread out to cover an unprecedentedly large area. This is the period identified with the famous Sesklo civilization, but a little before the end of the 5th millennium the area was abandoned as a result of some catastrophe, perhaps a fire, and remained uninhabited for more than 500 years; it was re-settled in the Later Neolithic period (4th millennium) and now covered a smaller area on the Kastraki hill.
Apart from Paliouri there is also the village of Kakavos on the boundaries of Aisonia. Kakavos, too, is remarkable for its charm, which derives from the emptiness of the landscape and awaits all those who feel the need to escape on a historical journey, to see the traces of history imprinted on the crumbling walls of the houses and the old narrow streets, all laid out against the background of time past.
Aisonia has its coastline too. The beach at Chrysi Akti Panayias, an undeveloped stretch of coastline, is a lovely place to rest and play for people of all ages.