Barzan Castle is one of the most prominent archaeological sites in Hail. It is located in the Barzan neighborhood of Hail. It was built during the reign of Muhammad bin Abdul Mohsen Al-Ali in 1808 AD on an area of more than 300,000 square meters. It consists of three floors on the ground floor, councils and salons. The reception, surrounded by gardens and green spaces, on the second floor are state guest rooms, and on the third floor the ruling family resides and is characterized by its own architectural style, which indicates the grandeur of architecture at that time.