What a sight it must have been when the ancient Greek seafarers laid their eyes on the majestic Temple of Poseidon at the very tip of cape Sounio.

Cape Sounio has been recognized since prehistoric times as a special place of worship and was an important sanctuary during the Greek Archaic, Classical, and Hellenistic periods. There are two sanctuaries present on the cape: the sanctuary of Poseidon and the sanctuary of Athena; two gods that were held in high esteem by the ancient Athenians. The ruins as we see them today are the result of the renovations that took place during the 5th century B.C., and replaced a succession of buildings that date back to the archaic period.

Like the other islands in the group, Aegina is the top of a sunken mountain. It is also the largest of the group.

On the Southern edge of the island lies the small fishing village of Perdika. This is one of the most picturesque spots on the island and still has the characteristics of the Aegean Sea-style of square houses and narrow streets.