Located 90 km west of Istanbul on Marmara coast. Named Perinthos by Greeks, later Herakleia (Ereğli). Was Roman regional capital and ancient minting center. Population was 26,007 in 2019
Erdemir is Turkey's largest integrated flat steel producer since 1965. Company produces approximately 4 million tons crude steel and 5 million tons final products. Located in Ereğli, Black Sea region with plants in Gebze, Ereğli, İskenderun and Manisa