This unique architectural monument of the Azerbaijani architecture was built in Baku in the XV century, in connection with moving the capital of Shirvanshahs’ state from Shemakha to Baku. The palace is situated on the highest point of one of the hills in Icheri-Shahar, the fortress of Baku. The ensemble consists of several buildings located under the relief at three levels: the main building of the Palace (1420), Divanhane (1450), Turbe Tomb (1435), the shah`s mosque with a minaret (1441), the mausoleum of Seyed Yahya Bakuvi (1450) and the remains of the mosque Keygubaba. High, well-proportioned portal of main entrance is decorated with ornaments and inscriptions of unusual style and beauty. Divanhane Palace is the place where are held official receptions and public meetings. There is the building of palatial mosque near the tomb. Sleek Arabic character on its minarets indicates that the monument was built in 1441. Turbe is a family tomb of Shirvanshahs, the creation of architect Muhammad Ali, whose name is cleverly hidden in the ornamental medallions of the portal, which do not inferiors in beauty and richness to the ornamentation of famous Divanhane portal. On the southern courtyard of the complex stands a small octagonal mausoleum of court scholar, Sayid Yahya Bakuvi, topped with a hipped dome. There is a palatial bath at the lowest point of the complex, almost underground. It severely damaged, but what is extant, says about rational deployment of its covered with domes and vaults of rooms, about its skillfully organized system of heating and water supply, heating of swimming facilities. East Portal is the creation of architect Amirshah (1585), which is the only construction in the ensemble dated back to the XVI century. In 1964, the complex was declared a museum and a reserve under the state protection.