1668 North Anatolia earthquake
The town of Bolu was reported to be almost completely destroyed by the earthquake, with 1,800 deaths. There was also severe damage further east along the fault, with another 6,000 reported deaths between Merzifon and Niksar. The total death toll was around 8,000. Some damage was also reported from as far east as Erzincan and at various locations along the Black Sea coast. The town of Samsun was also heavily damaged. The walls and towers of Samsun Castle were damaged and some parts of the structure "were demolished".