Cambodian artists perform at the opening ceremony of the 37th session of the World Heritage Committee at the Peace Palace in Phnom Penh, capital of Cambodia, on June 16, 2013. The 37th session of the World Heritage Committee kicked off at the Peace Palace in Cambodian capital Phnom Penh on Sunday evening aiming to consider the inscription of new sites onto the UNESCO's World Heritage list. [Photo/Xinhua]