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UNESCO heritage sites across the globe

September 19, 2012 -- Updated 1655 GMT (0055 HKT)

This year marks the 40th anniversary of the World Heritage Convention -- an international treaty adopted by the United Nations Educational, Scientific and Cultural Organization (UNESCO) to preserve the world's cultural and natural heritage sites.

UNESCO's World Heritage in Danger currently lists 38 sites under threat. This interactive map highlights 10 significant architectural sites in peril.

Produced by Lauren Said-Moorhouse, Mark Tutton, Ivana Kottasova and Matthew Knight, CNN | Images: Getty Images and courtesy of UNESCO

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