Castle Moelh Ottoman is a large historical monument located near the village of Al-Muwailih, which belongs to the Duba Governorate, which belongs to the Tabuk region. In the ancient times, the castle was considered one of the main stations of the coastal pilgrim road, as well as being a portal of the northern gates in the late Islamic eras. The castle was built during the reign of Sultan Suleiman the Magnificent in 968 AH, and it has been inhabited for more than four hundred years and is considered by historians as one of the major castles in the Kingdom of Saudi Arabia.
