It is one of the most important monuments in Saudi Arabia from which modern Saudi history begins. Where Masmak Palace occupies a prominent place in the history of the city of Riyadh in particular, and the Kingdom of Saudi Arabia in general, as it represents the blessed start that resulted in the establishment and unification of the kingdom, and it is one of the most important historical monuments in the Kingdom where this fort was associated with the epic heroic opening of Riyadh, which was achieved by the king Abdulaziz bin Abdul Rahman Al Saud - may God have mercy on him - at the dawn of the fifth of the month of Shawwal in 1319 AH, as it had to be inaugurated as the seizure of it represented the restoration of the city of Riyadh.