Sinop: Türkiye's Northernmost Town and Its Prison Fortress

✓ Last reviewed: 29 September 2026 — Verified and updated by İlyas Bayrak, licensed Turkish guide (licence 070867), with the My Turkey Adventure editorial team. Prices, opening hours, transport fares and visa rules reflect the latest 2026 guidance. Quick Answer: Sinop, Türkiye, is a captivating Black Sea port city defined by its dramatic peninsula, ancient history, and infamous prison. It is absolutely worth visiting for travellers seeking an authentic slice of Black Sea Turkey , famous for its formidable fortress, the legacy of the philosopher Diogenes , and stunning natural landscapes. This Sinop travel guide will show you why it's a highlight of any off-the-beaten-path journey in Turkey. In Black Sea cooking, I encounter local ingredients such as maize flour, kolot cheese and Anzer honey. For authentic Vakfikebir bread and special mihlama experiences, I choose small, family-run restaurants in the highlands rather than tourist establishments. On crossings to Giresun Island (Aretias), the Black Sea's only habitable island, I find that wave heights can rise suddenly. I check private-boat berthing permissions with the coastguard and harbour authority at the time of arrival. Fact Detail Location Sinop Province, the northernmost point of Anatolian Türkiye . Period / Type Ancient Greek colony, Seljuk/Ottoman port, Fortress Prison Museum. What It Is A historic peninsula city with ancient walls, a notorious prison, and unique natural formations. UNESCO Status The Erfelek Waterfalls are on the Tentative List ( 2020 ), but the city itself is not inscribed. Entry Small entry fees are required for the Sinop Fortress Prison and museums. Last checked September 2026 , confirm locally. Typical Visit Length 2 full days. Nearest Airport Sinop Airport (NOP) . Driving Time Approx. 2.5 hours from Samsun ; 7-8 hours from Istanbul . Best Months June to September for the best weather and swimming. What Is Sinop and Where Is It Located? Perched on the northernmost tip of Anatolia, Sinop i