Palmyra is among the six ancient sites in Syria that have been added to Unesco’s list of endangered world heritage sites as the ongoing conflict takes its toll on the archeological wonders of the country, in addition to claiming many thousands of human lives. Photograph: Francisco Lozano Alcobendas

Six ancient sites in Syria, including a fortress built by Saladin and a famed Crusader castle, have been added to Unesco’s endangered World H(...)