Filyos was a Miletus colony founded in the 3rd century BC. Throughout antiquity, it was an important port city on the Black Sea. The Filyos Castle, thought to have been built by the Romans, is situated on a promontory overlooking the sea.
Fıyos Castle
Öteyüz Mah., Filyos(Hisarönü), Çaycuma, Zonguldak

