Center particularly important under the Nabateis since the II century B.C., epoch in which, second to Petra only, checked the commercial streets that connected Egypt and the Arabic peninsula to the area egea, Bosra passed in the hands of the Romans subsequently. In 106 AD the emperor Trajan made designate it capital city of the Roman province of Arabia. After the fall of the empire Roman Bosra remained an important center of irradiation of the Christian religion up to the Arabic conquest. Bosra remained for a long time a privileged halting-place of the caravans of the pilgrims directed to the Mecca and Medina, holy places of the Islam. The decadence began in the century XIII, with the first billow of the Mongolian invasions. 

 The exceptional interest of Bosra has put especially in the Arabic strengthened citadel that englobes the Roman theater, still almost intact. From 1980 the ancient Bosra has been inserted in the list of the Patrimonies of the humanity.