Pórto Yermenó is a village on the southern slopes of the Kithairon range at the northeast corner of the Gulf of Corinth, with a broad sandy beach. It occupies the site of ancient Aigosthena, with fortifications which are a magnificent example of Greek defensive architecture of around 300 B.C.
Pórto Yermenó is reached from
the Eleusis-Thebes road. 3km/2mi beyond Inón, at the ancient fortress of Panakton (after 346 B.C.) on the frontier of Attica - whose walls of dressed stone, still standing to the height of the wall-walk, with towers and seven gates, are impressive even when seen from the road, some distance away - a side road branches off on the left and leads via Vília to Pórto Yermenó (23km/ 14mi).
There are substantial remains of ancient Aigosthena, which was founded by Megara to counter the Attic frontier fortress of Panakton, to the east of the village. The acropolis is surrounded by a double wall with towers at intervals of 48m/160ft, and a long stretch of defensive wall extends down from the northwest corner to the sea. Within this wall are the remains of a five-aisled Early Christian basilica, over which a monastic church was later built. The walls are mostly constructed of polygonal blocks. The gateway of the acropolis stands on the west side. Diagonally uphill from this, to the right, stands the imposing southeast tower.
Bus service from Athens.