Safranbolu is probably the most well-known place in Karabük. It is also the biggest district of the province. Safranbolu has attractions from all over the world because of its famous historical houses. The houses were built in the 18th and 20th century and they remained their constructions still today. Those mansions are under the protection of UNESCO. The mansions carry the spirits of Ottomans and Rums. There are also churches hamams and historical bridges that you can visit in Safranbolu. The district has a museum named Safranbolu City Museum which has the pieces from Byzantium, Rome, Ottoman and Republican periods.