Cius

Cius (; Ancient Greek: Kίος or ΚῖοςKios; Currently Gemlik, Turkey) was an Ancient Greek city bordering the Propontis (now known as the Sea of Marmara), in Bithynia and in Mysia (in modern northwestern Turkey). The city was later renamed to Prusias after KingPrusias I of Bithynia, who once restored the city.