King Abdulaziz Castle in Duba

King Abdulaziz Castle in Duba is a historical castle located in Duba Governorate, Tabuk Province, north of the Kingdom of Saudi Arabia. It was built in 1933 during the reign of the Founding King Abdulaziz Bin Abdulrahman Al Saud, following the unification of the Kingdom of Saudi Arabia. The castle stands as an archaeological witness to the historical development of Saudi architecture in the northwestern part of the country and is one of the prominent historical landmarks in the province.

The castle was built at the highest point in the old town of Duba Governorate, overlooking the market from the western side, intended to serve as a ruling palace. It was constructed by local residents and architects from Duba, al-Wajh, and Yanbu Governorates. Initially, stones were brought from al-Muwailih Castle via sailing ships and from Burqan Island. Later, building materials were sourced from quarries within the governorate, including limestone.

King Abdulaziz Castle in Duba is a testament to Saudi architecture in the province. The castle features a spacious rectangular courtyard at its center, surrounded by a series of rooms and facilities. It is reinforced by four towers at the corners, each shaped like three-quarters of a circle. The castle has two entrances: one on the western side and the main entrance on the eastern side, above which a foundational plaque reads, "Built during the reign of King Abdulaziz 1933." Additionally, there is a mosque located on the northern side of the castle.

In 2022, the Heritage Commission of the Ministry of Culture registered King Abdulaziz Castle in Duba in the National Register of Architectural Heritage, as part of thirty-seven new architectural heritage sites in Tabuk Province.