Krak des Chevaliers (castle) built
1031 CE.
Shown on the map at 34.757°, 36.295°.
Krak des Chevaliers (French: [kʁak de ʃ(ə)valje]; Arabic: قلعة الحصن الأكراد, romanized: Qalʿat al-Ḥiṣn, Arabic: [ˈqalʕat alˈħisˤn]; Old French: Crac des Chevaliers or Crac de l'Ospital, lit. 'karak [fortress] of the hospital'; from Classical Syriac: ܟܪܟܐ, romanized: karəḵā, lit. 'walled city') is a medieval castle in Syria and one of the most important preserved medieval castles in the world. The site was first inhabited in the 11th century by Kurdish troops garrisoned there by the Mirdasids. In 1142 it was given by Raymond II, Count of Tripoli, to the order of the Knights Hospitaller. It remained occupied by them until it was reconquered by the Muslims in 1271. The Hospitallers began rebuilding the castle in the 1140s and were finished by 1170 when an earthquake damaged the castle. The order controlled castles along the border of the County of Tripoli, a state founded after the First Crusade. Krak des Chevaliers was among the most important and acted as a center of administration as well as a military base. After a second phase of building was undertaken in the 13th century, Krak des Chevaliers became a concentric castle.
Text from the Wikipedia article Krak des Chevaliers, licensed CC BY-SA 4.0.