Οι παραλίες στην ανατολική Αττική. The beaches in eastern Attica | Sesi's Beach. Clear crystal clear waters, sand with small pebbles and tamarisk trees that reach the sea, offering their shade to bathers will make you love this small northern beach. It is located outside the settlement of Sesi at a distance of 22 km from the Tomb of Marathon and you reach it by crossing the dirt road from Grammatiko. Ideal for a quiet bath mainly in early summer, it is not organized but there are nearby taverns.