Demetriapolis, or Demetrias was a Greek city in Arachosia, thought to have been founded by the Greco-Bactrian king Demetrius as he invaded areas south of the Hindu Kush. In the 1st century BCE in his "Parthian stations", Isidorus of Charax mentions the rule of the Parthians over Arachosia, an area south of the Hindu Kush and next to today's Afghanistan, and populated by Greek colonies: