After an hour's drive from Athens, you'll be transported to the port of Lavrio where you'll board your inflatable boat.
Your guide will bring you to the uninhabited Makronissos island, which was once a place of exile, where you will spend the day and have a chance to swim in the crystal clear waters.
Together with your guide you will explore the island, snorkel and have lunch on the beach. You will explore a deserted Cyclades island which is an archaeological site. At the end of the day you'll find yourself under the temple of Poseidon in Sounio to watch the sunset.