Bjni Fortress is a castle located in the village of Bjni in the Kotayk Province of Armenia. It sits upon the top and along the sides of a rocky plateau that nearly divides the village in half. The larger portion of the fortress is located west of this mesa and curves south, while a smaller portion is east. The walls of the fortress may only be seen from the western side of the village, and are easiest reached via a narrow dirt road that forks (take the left fork) and goes up the side of the hill past some residences. Portions of the exterior fortification walls at Bjni have survived and follow the sides of the mesa.