Gulustan Fortress, Medieval fortress in Goranboy District, Azerbaijan

Gulustan Fortress stands on a hill on the right bank of the Incechay, 2 km west of Gulustan village and opposite Mount Murovdag, at 1,700 m above sea level. It measures 200–250 m east–west and 20–25 m north–south. Its walls are 0.8–0.9 m thick on the north and west and 1.5 m on the south; several towers and building remains survive inside.

Gulustan Fortress was the residence of the Beglaryan family, rulers of the Armenian melikdom of Gulistan. The Russian source dates its construction to the 12th century, while Azerbaijani researchers place it in the Caucasian Albanian period. In 1881 the Armenian poet Raffi spent a week with Sergei-bek and Alexander-bek Beglaryan, saw their half-ruined residence and deciphered inscriptions on the family graves. The Gulistan Treaty was signed in this fortress.

The fortress was the residence of the Beglaryan family, rulers of the Armenian melikdom of Gulistan. The name comes from Persian and means "land of roses". In 1881 the Armenian poet Raffi spent a week here as a guest of Sergei-bek and Alexander-bek, copying nearly illegible inscriptions on the family tombs.

Enter from the southeastern side where the main gateway is located, as the other approaches are blocked by natural cliffs and forest. Wear sturdy footwear since much of the site has uneven rocky ground and steep slopes.

The fortress walls differ in thickness: 0.8–0.9 m on the north and west sides but 1.5 m on the south wall. Inside the grounds, foundations of buildings and an ovdan, a covered water reservoir, survive, and a hidden path leading down to the Incechay was recorded at the site.