The collection of Golestan Palace, a memorial to the historic citadel of Tehran, is the residence of former kings of the Qajar dynasty and one of the most beautiful and oldest monuments of the 200-year-old capital of Iran. The historical record of the royal citadel, whose boundary is from the north to the street and the square of Imam Khomeini; Former Sepah, west of Khayyam Street, east to Nasir Khosrow Street, and south to Fifth Avenue and Argh Square, dates back to Safavid times. Although the history of the Golestan Palace dates back to the time of Shah Abbas Safavid, but in the subsequent dynasties it was more or less taken into account until it was changed in the ceremony of Karim Khan. But the true significance of the citadel can be attributed to the era of Qajar Mohammad Khan. During the Naser-al-Din Shah Qajar era, Golestan Palace was undergoing fundamental changes influenced by Europe due to its rule (nearly 49 years) and its visit as the first king of Iran from Europe during its three trips. Although during the last three Kingdoms of the Qajar dynasty (Muzaffar al-Din Shah, Mohammad Ali Shah and Ahmad Shah Qajar), until the end of this dynasty, the royal citadel, in terms of architecture, did not see any particular changes, but its history was accompanied by extremely effective political events such as the Constitutional Revolution and the consequences It became an integral part of the historical memory of the Iranian nation. The Golestan Palace, dating back to 442 years ago, is one of the most exclusive historical collections in Iran. Not only does this collection represent an important part of the history of the art of this border, but it has become the most important part of Iranian history due to the incredibly effective events occurring in it, or somehow related to it, to a vivid collection of vivid and live documents.