The Crac de Marget Castle considered one of the castles which was existent before the crusading invasion to the Syria then after the occupation it became one of the important military castles which being concerning the districts of the crusading power.The Crac de Marget Castle has a very important military role being it the sea and earth defense front from principality in addition to its role in defending to the holly lands which was the main purpose that was the military and religious organizations took all their efforts, and the castle was as a military base which the crusading assumed it to make attack on the Muslim authority districts of Al-Sham country.Concerning to the religions role, the castle was a central of the administration for the consultation order and it is considered as a location for the holding of annual meeting of the order guesting its older visitors.But for its religious role, the castle was the main head quarter in addition it is contain a church to perform their worshiping and rites duties.This castle has power that make many Moslems leaders couldn't occupied it for more than 180 year till was liberated from crucifixion at the era of Mamlokion sultan Al-Mansoor- KulaRoon (678-689A.H/1279-1290A.D), it is still its antiquities standing till now a days in spite of more than eight century from its structure.