Krak des Chevaliers (World Heritage Site)[2][3] An air raid on Syria's famed Krak des Chevaliers castle, a UNESCO World Heritage Site, has damaged one of the fortress's towers. The footage shows a huge blast as a tower of the Crusader castle appears to take a direct hit, throwing up large clouds of smoke, and scattering debris in the air.[citation needed] Archaeological Villages of Northern Syria (World Heritage Site) Bosra (World Heritage Site) Palmyra (World Heritage Site), Islamic citadel damaged by gunfire.[4] Old city of Damascus (World Heritage Site)[4] Medieval buildings in the Ancient City of Aleppo (World Heritage Site)[1][5] Al-Madina Souq in Aleppo, world's largest covered historic market, destroyed and burnt by fire.[6] Great Mosque of Aleppo, damaged during a Syrian rebel offensive. Wall destroyed by Rocket-propelled grenades.[7] Also damage to the prayer hall and main gate.[8] Apamea and the wall and towers of the citadel of Al-Madiq Castle (Tentative World Heritage Site) Mosque of Idlib Sermin Mosque of al-Tekkiyeh Ariha[9] Grand Mosque of Al-Qusaayr Monastery of St. Elian[9][10] Mosque al-Herak[11] Our Lady of Seydnaya Monastery[12] Monastery of Saint James the Mutilated (Qara) Citadel of Aleppo[13][14] Assyrian Temple at Tell Sheikh Hamad[2] Large parts of Hama Large parts of Homs Tomb of Sheikh Dahur al-Muhammad, Rityan Unspecified sites and monuments in the Daraa District (in particular Dar al-Balad, Da'il and Inkhil) Mosque al-Umary in Daraa (one of the oldest Islamic monuments) Ancient temple of Ain Dara at Afrin.