[3] As a result of archaeological excavations on the territory of the fortress, the remains of buildings of the palace complex, samples of material culture of the 9th-12th centuries were discovered.

), the underground passage of the Gulistan fortress leading to the water is more complex and more carefully constructed.

[2] The orientalist and archaeologist Yevgeni Pakhomov assumed that in the area of the ruins of this fortress the city of Yazidiyya was located, the name of which as the capital of Shirvan is mentioned in “Tarikh al-Bab” until 1072.

[8] Information about the fortress, its walls and general appearance is available in the work of the tutor of the son of Shirvanshah Kavus Arif Ardabili in his “Farhad-name”, which was written in the style of the poem “Khosrov and Shirin” by Nizami Ganjavi.

[9] After the ruler of the Safavids Shah Ismail took Baku in 1501, his troops besieged the Gulustan fortress, but they failed to take it.

Thus, due to stubborn resistance, Ismail was forced to lift the siege of Gulistan.

With the advent and spread of firearms, the Gulistan fortress eventually lost its defensive significance.