Syria's threatened historic sites and artefacts
27 July 2014 Last updated at 08:48 BST
The war in Syria has cost countless lives - and it has also put the country's heritage at stake.
Now, UNESCO has established an observatory in the Lebanese capital, Beirut, to monitor and try to stop the smuggling of Syrian artefacts into neighbouring countries.
Lina Sinjab reports from Aleppo and Beirut.