Zonguldak is a major hub for coal production in Anatolia and a significant seaport on the Black Sea. Its history dates back to around 550 BC when it was founded by people from Doric clans under the name Mariandyn. Later, in 560 BC, Greeks from Megara and Boiotia established a strong Greek colony named Herakleia Pontika after the mythical hero of ancient Greece, Heracles. As time passed, the Greek name "Heracles" evolved into "Eregli" among the locals.
Due to its abundant coal mines and harbor, Zonguldak is a strategically significant region. It was mainly dominated by the Kingdom of Bithynia in the 2nd century BC, followed by Romans in the 1st century AD. Control over the area passed between Byzantine, Genoese, and Ottoman Empire, with France taking over after World War I. The city was returned to Turkey in 1920 after the successful suffrage for Turkey following the war.
Zonguldak boasts some of the most beautiful beaches in Turkey, including Kopuz and Uzunkum, where you can enjoy lunch at a tea garden or restaurant, appreciate the scenic views, and take photographs of the breathtaking nature.
Eregli, located 37 miles west of Zonguldak, is home to a mythical site from ancient Greco-Roman times. Near Kavakderesi and below Cehennemagzi Hill, believed to be the entrance to the underworld, Hercules is said to have captured Cerberus—the three-headed dog guarding both gates of heaven and hell. When visiting Eregli, don't miss the chance to try some delicious strawberries, which are among the best in the world.