Aegium was an ancient city located in the region of Achaea in Greece. It served as a significant center for trade and culture during antiquity, particularly known for its strategic position along the Gulf of Corinth. Aegium was also recognized for its worship of the goddess Demeter and had a notable temple dedicated to her. The city played a role in various historical events, including the Peloponnesian War. Aegium was a member of the Achaean League, a confederation of city-states in the area. Over time, it experienced periods of prosperity and decline, reflecting the broader changes in the region's political landscape.