
The Convent of Our Lady of Seidnaya (located 27 km north of Damascus and dating back to 547) has an interesting story:
Justinian I, Emperor of Byzantium, came to this desert, where his army encamped and soon suffered thirst for lack of water. When they despaired, the emperor saw a beautiful gazelle off in the distance. He vigorously gave chase, hunting the animal until it tired and stopped on a rocky knoll and approached a spring of fresh water, but without giving the emperor the opportunity to shoot it. Suddenly, it transformed into an icon of Virgin Mary, which shone with a brilliant light. A white hand stretched forth from it and a voice said, "No, thou shalt not kill me, Justinian, but thou shalt build a church for me here on this hill." Upon his return, Justinian related what he had seen to his subordinates and ordered them immediately to draw up a plan for the contemplated church. After some time had passed and the architects were unable to resolve the problems of the plan, the Holy Virgin (the gazelle) reappeared to Justinian in a dream and confided a magnificent plan to him for a convent, of which she would be the Protectress. It is said that the basic structure of the convent follows this plan to this day. The convent soon gained such renown that it came to be ranked second only to Jerusalem as a place of pilgrimage, and nuns from every corner of Syria, Egypt, and other lands flocked to it.
(Text from Saidnaya.com)