Siege of Tripoli
1102 CE.
Shown on the map at 34.433°, 35.844°.
The siege of Tripoli lasted from 1102 until 12 July 1109. It took place on the site of the present day Lebanese city of Tripoli, in the aftermath of the First Crusade. It led to the establishment of the fourth Crusader state, the County of Tripoli.
Text from the Wikipedia article Siege of Tripoli, licensed CC BY-SA 4.0.