3rd-century fortifications

cultural property in Lugo, Spain

Falak ol-Aflak () or Shapur Khast Castle () is a castle situated on the top of a large hill with the same name within the city of Khorramabad, the regional capital of Lorestan province, Iran. This gigantic structure was built during the Sasanian era (224–651).

Benteng kuno di Qatif, Arab Saudi

a Roman military complex, or castra, built in the ancient city of Palmyra in the Syrian Desert.

Roman Defensive Fortifications