'Parthenonas', only 5 km away from Neos Marmaras, was referred to as Parthenopolis, Partheni or Parthenionas since ancient times. Contemporary researchers tend to accept that the old Byzantine Parthenonas, founded during the Ottoman era and the current one were not at the same place. The ancient city of Parthenopolis, however, may have been situated very close to the current location of the settlement.