Karabük is a small industrial city in northwestern Turkey's Western Black Sea region, best known as the gateway to Safranbolu — a UNESCO World Heritage Site of 17th-century Ottoman merchant houses, ancient hans, and cobblestone lanes. Beyond Safranbolu, the province rewards visitors with deep river canyons, ancient Phrygian-era ruins at Eskipazar, dense Black Sea forests, and the dramatic Tokatlı Canyon.