"قصر المصمك  حصن محكم مربع ذو أبراج وجدران سميكة يقع في الحي القديم في وسط مدينة الرياض, واقترن هذا الحصن بملحمة فتح الرياض البطولية على يد الملك عبد العزيز آل سعود - رحمه الله في فجر الخامس من شهر شوال عام 1319هـ.  

"Masmack Palace: It is a strongly protected fortress with thick walls located in the old neighborhood of the of Riyadh city center. In the beginning of the 20th century, on the dawn of Shawwal 1319H (January 1902), this fortress was a witness to a decisive battle when the Turkish rulers were vanquished by the founder of the Kingdom, King Abdulaziz Al Saud, after conquering Riyadh and subsequent strategic expansions, Kingdom of Saudi Arabia was established.   

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http://www.scta.gov.sa