Rustaq Fort is located at the botom of Al-Jabal Al-Akhdar on the edge of Al-Batinah Plain in Al-Rustaq Province, Southern Batinah Governorate. The Fort was first built on the Persian ruins around 1250 AD, but the present great building was rebuilt by the first of the Alyaarba imams from 1624-1649. In addition to the ground floor, houses, weapons stores, reception rooms, gates, mosque, prisons, wells, other facilities. In Rustaq Fort, the four towers were built in 1477 and 1906, The first : the red tower, in which its height more than 16 meters and a diameter of nine meters and a half, Second: the tower of the wind, was built by Imam Saif bin Sultan al-Yaarbi that is located in the western corner of the castle.
The height of the "Wind Tower" 12 meters and the diameter of 12 meters also, and it is surrounded by a hundred decorative triangle, Third: Tower of the devils, which was built by Imam Saif bin Sultan al-Yaraibi also known as "resterant of the earth" and the height of the tower is 18 meters and a half meters and diameter of about six meters and surrounded by five decorative triangles, And fourth: the modern tower, which was built during the reign of Imam Ahmed bin Said, and a height of 11 meters and a half meters, and eighty decorative beauties. In the castle Rustaq ten guns. Four of them in the modern tower, three in the wind tower, and the other three at the bottom of the castle. There are also four gates are: Sabah Al-Yarabah - Al-Aalal, Al-Wusta, Sabah Al-Sarh Area of the castle: 60 meters long - 45 meters wide - Total area: 2700 square meters.