Nafpaktos is a seaside town of the Region Unit of Etoloakarnania in the Gulf of Corinth. It is built between Antirrio and the estuary of the river Mornos, in the southeastern part of the Unit It has a population of 13,415 inhabitants. It is one of the oldest Greek cities that experienced periods of great prosperity and was associated with important historical events. This is confirmed by its perfect fortification, which starts from the port, continues with three consecutive walls and ends at the castle. It has been characterized as a traditional settlement.