4The 13th century Palmyra Castle, also known as Fakhr-al-Din al-Ma’ani Castle, Syria

Palmyra Castle is thought to have been built by the Mamluks in the 13th century on a high hill overlooking the historic site of Palmyra and is named for the Druze emir Fakhr-al-Din II, who extended the Druze domains to the region of Palmyra during the 16th century.  

The castle became a UNESCO World Heritage Site in 1980 as part of the site of Palmyra.