The Temple of Poseidon at Sounion was built during the Age of Pericles, but the site has been used to worship Poseidon since the Archaic period. The original temple was likely destroyed by Xerxes’ invading army in 480 bce. This site has deep history, and reaches deeper still into mythology. It’s the site from which King Aegeus of Athens lept to his death upon seeing the black sails of Theseus’ ship on the horizon.
Also at Sounion, are the ruins of the Temple of Athena. It is one of the more unusual examples of Greek architecture, as it was constructed with colonnades on only two—but adjacent—sides. Also, it’s architectural style was not in the Doric order, but Ionic. This is quite odd, given the fact the Ionic order was, at the time, characteristic of the Aegean islands. Yet, her temple was (obviously) built in Attica.
Below are some clips I filmed from my cell phone of the site. It starts out with my drive out of Athens, then a bit from the drive south towards the Cape of Sounion