  zonguldak province () is a province along the western black sea coast region of turkey. the province is 3.481&nbsp;kmÂ² in size and has a population of 619,703 its adjacent provinces are dÃ¼zce to the southwest, bolu to the south, karabÃ¼k to the southeast, and bartÄ±n to the east. the capital is zonguldak. since the discovery of coal in the province, zonguldak has become a major coal production center. == districts == zonguldak province is divided into 6 districts (capital district in bold): * alaplÄ± * Ãaycuma * devrek * ereÄli (heraclea pontica) * gÃ¶kÃ§ebey * zonguldak == sites of interest == thumb|right|250px|filyos bay, zonguldak ilÄ±ksu, kapuz, gÃ¶bÃ¼ beaches, national sovereignty forest, lake (gÃ¶l) mountain, plateau, kocaman, bostanÃ¶zÃ¼, ÃamlÄ±k, baklabostan and gÃ¼rleyik forest recreation areas, cumayanÄ±, kÄ±zÄ±lelma, mencilis caves. === museums === ereÄli museum address: atatÃ¼rk kÃ¼ltÃ¼r sitesi ereÄli - zonguldak tel: (372) 312 03 62 open daily except mondays: 08:00 - 16:30 ==== ereÄli ==== ereÄli was founded during the 6th century b.c. by the mariandynians, who were the successors of the phrygians. ereÄli was an important commercial wharf (emperion), which takes its name from the famous mythic hero, hercules (heracles). the city preserved its importance during the roman, byzantine, seljuk, and ottoman empire periods. important historical ruins in the region include the acheron valley ruins, in which the cehennem aÄzÄ± caverns are located, along with hellenic, roman, byzantine and ottoman ruins, ereÄli castle, heracles palace, ÃeÅtepe lighthouse tower, byzantine water cisterns, krispos mausoleum, byzantine church and halil paÅa mansion. === beaches === thumb|right|250px|zonguldak ttk port many natural and sandy beaches may be found along a fifty mile (80&nbsp;km) stretch of the coast. beginning from the east, these beaches include: sazkÃ¶y, filyos, tÃ¼rkali, gÃ¶bÃ¼, hisararkasÄ±, uzunkum, tersane, kapuz, karakum, deÄirmenaÄzÄ±, ilÄ±ksu, kireÃ§lik, armutÃ§uk, black sea ereÄli, mevreke, alaplÄ± and kocaman. === promenade === the boroughs of the city are used as daily recreation areas for leisurely hikes by regional residents. boroughs are artificial lakes in
Zonguldak_Province