Archaeological finds on the site date from as early as 700 BC. Herodotus tells us that in the sixth century BC, the Athenians celebrated a quadrennial festival at Sounion, which involved Athens' leaders sailing to the cape in a sacred boat.
TheTemple of Poseidonwas constructed in 444-440 BC, over the ruins of a temple dating from the Archaic Period.
The laterTemple at Sounion, whose columns still stand today, was probably built in ca. 440 BC. This was during the ascendancy of Athenian statesman Pericles,who also rebuilt the Parthenon in Athens.The remains are perched on the headland, surrounded on three sides by the sea. The ruins bear the deeply engraved name of English Romantic poet Lord Byron (1788–1824).
Cape Sounion Tour from Athens about 70 kms along the Saronic Gulf Coast at the southernmost tip of the Attica peninsula in Greece.. With beautiful sea views and beaches such as Glyfada, Vouliagmenis, Varkiza and Lagonisi overlooking the Aegean Sea.
The site is a popular day-excursion for tourists from Athens, with sunset over the Aegean Sea, as viewed from the ruins, a sought-after
spectacle.