Cape Sounion is an amazing area to visit during your vacation in Athens. It is located 65 km south east of the city centre and it is one of the best sights in Athens. A beach and other beaches with clean waters. There are also many rental facilities and nice hotels. An hour from there you will find the Temple of Poseidon. The Temple was constructed around 600 BC, it was destroyed in 480 BC by the Persians and in 440 BC it was rebuilt by Pericles.