Aref Castle is one of the most prominent tourist attractions in Hail, and attracts many visitors from tourists and citizens. It is located at the top of Mount Arif in the heart of the city of Hail. It was built at the beginning of the 18th century to protect the city. It was built of mud and has openings, watchtowers, places of prayer, and warehouses. It covers an area of 440 square meters, and is a testament to the civilization of the city of Hail, and the greatness of engineering and construction at that time.