Siege of Edessa
544 CE.
Shown on the map at 37.146°, 38.784°.
The siege of Edessa (then known as Justinopolis) occurred in 544 AD during an invasion of the Byzantine Empire ruled by Justinian I by the Sasanian Empire under Khosrow I in the midst of the ongoing Lazic War in the north. The city withstood the fierce siege. Due to the religious nature of the city, some Christian traditions have attributed the result of the conflict to divine intervention.
Text from the Wikipedia article Siege of Edessa (544), licensed CC BY-SA 4.0.