Besides these natural beauties, Bolu is home to historical sites from the Ottoman Period.
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The impressive 14th century Ulu Mosque and modern thermal facilities can be seen in the city centre.
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The Bolu Archaeology and Ethnography Museum has artefacts from the Hittite, Roman, Byzantine, Seljuk and Ottoman periods.
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Located on the historical Silk Road, Mudurnu and Göynük counties, both of which have been declared urban conservation areas, are well known with centuries-old Ottoman houses and caravanserais.