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|Sinop Province, Turkey|
Sinop Fortress was built in the 8th century by the immigrants coming from Miletus. Genoeses have improved the fortress. The castle was included in the World Heritage Tentative List in 2013. The castle underwent restoration starting in 2019.
Length of the bastions and walls are 2.000 meters. Bastions are 8 meters wide and 25 meters high.
- "Tarihi Cezaevi" (in Turkish). muze.gov.tr. Retrieved 20 April 2020.
- "Trading Posts and Fortifications on Genoese Trade Routes from the Mediterranean to the Black Sea". UNESCO. Archived from the original on 12 September 2015. Retrieved 25 June 2015.
- "2 bin 500 yıllık Sinop Kalesi, restore edilecek". Hürriyet (in Turkish). 4 December 2019. Retrieved 20 April 2020.