6th millennium BC
Neolithic
A Neolithic settlement at Krathio, on the Sylivaina coast Museum label.
c. 2700–2000 BC
Early Bronze Age
Early Helladic settlements at Rizomylos (Helike) and Keryneia.
c. 1600–1100 BC
Mycenaean
Mycenaean walls and pottery at Helike, and Late Helladic III tombs on Kallithea hill near Nikoleika.
c. 900–700 BC
Geometric
The Poseidon sanctuary at Nikoleika, the cemetery at Seliana, and early cult activity at Trapeza.
c. 700–146 BC
Archaic, Classical & Hellenistic
The temple at Trapeza and the Achaean League. Helike was destroyed in 373 BC, and Aigion rose afterwards.
146 BC – 4th c. AD
Roman
The Corinth–Patras road crossed the area, and the marble Zeus of Aigion dates from this time.
4th–15th c.
Byzantine
[PLACEHOLDER: Byzantine history of Aigio]
15th–19th c.
Ottoman
[PLACEHOLDER: Ottoman era and 1821]
19th c. – today
Modern
[PLACEHOLDER: the modern town]