The story of building Al-Masmak goes back to the era of Imam Abdullah bin Faisal bin Turki bin Abdullah bin Muhammad bin Saud, who started building it in 1282 AH corresponding to 1865 AD within a large palace in the heart of Riyadh. This fort was part of that palace. And Al-Masmak or Al-Masmak means the thick and high fortified building, where historians have called it several names, including the fortress, the castle, and Al-Masmak or Al-Masmak, but the last name is the common one. In its construction, mud and mud mixed with straw were used. The foundation was built of stones, its outer walls were covered with clay. The roof was used to cover wood from trunks of tamarisk trees, leaves and palm fronds covered with a layer of mud. The museum contains pictures, maps, models, display cabinets, some ancient weapons and some pieces Folk heritage and the audio-visual exhibition hall.​ The halls of the Musmak Museum: - the main courtyard - Riyadh in its recovery time - the storming of Masmak - the pioneers - historic Riyadh - the fortress of Masmak - the uses of Masmak - the last hall, sections of Masmak - the gate - the mosque - the majlis - the well - the towers​ ​.