the port town ermioni is situated in the southeastern part of argolis, on the coast of the aegean sea. it faces the islands of hydra and dokos. the municipal unit ermioni also contains the communities iliokastro (7 km north of ermioni) and thermisia (7 km east of ermioni). it is 10 km east of kranidi, 22 km southwest of galatas and 44 km southeast of nafplio. ermioni is connected to piraeus by ferry.