Tourist invasion threatens to ruin glories of Angkor Wat

It has survived the collapse of the sophisticated civilisation that built it, centuries of consumption by the suffocating jungle and the nihilism of the Khmer Rouge, who beheaded its stone Buddhas and used its walls for target practice. Now, Cambodia's awe-inspiring Angkor Wat complex is facing the biggest threat in a millennium - the fastest-growing tourist onslaught of any World Heritage site, which conservationists warn is already damaging its treasures irreparably.