Poros is a small
Greek island-pair in the southern part of the
Saronic Gulf, about (31 nautical miles) south from
Piraeus and separated from the
Peloponnese by a wide sea channel, with the town of
Galatas on the mainland across the strait. Its surface area is about and it has 3,780 inhabitants. The ancient name of Poros was Pogon. Like other ports in the Saronic, it is a popular weekend destination for Athenian travellers.