Panactum
Tanagra Municipality, Greece
Panactum or Panakton (Ancient) was a fortress on the frontiers of ancient Attica and Boeotia. Ancient Athenians and Boeotians frequently fought over this. In 304 BC, Demetrius I Poliorketes took the fortress after a siege. The site of Panactum is located between modern Panakto and Prasino (formerly, Kavasala).
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).