Berdavan Fortress lies in the Tavush region, about 1 km east of the village of Berdavan, on a triangular hill on the right side of the Koghbajur River. It dates to the 17th–18th centuries and was long known as Ghalinjakar.
No inscription records its construction date; the only written testimony comes from an anonymous 12th-century Georgian author, who states it was liberated from the Seljuks by King David the Builder in 1123. The fortress is oval-to-rectangular in plan, stretching east–west, with its only entrance from the west, and likely had a second floor whose flooring has not survived.
The walls enclose a triangular area and are reinforced with semicircular towers — eleven, by various counts — about 1.2 m thick, with heights varying from 5.5 to 10.5 m due to the hill's slope. Medieval churches and a cemetery with 10th–14th-century khachkars are also recorded nearby.
