In December, 1999, at the 23th meeting of World Heritage Committee of UNESCO in Marrakesh, Marocco, My Son was recognised as world cultural heritage based on two prominent criteria: criterion (ii) an exceptional example of cultural interchange, with an indigenous society adapting to external cultural influences, notably the Hindu art and architecture of the Indian sub-continent and criterion (iii) the Champa Kingdom was an important phenomenon in the political and cultural history of South – East Asia, vividly illustrated by the ruins of My Son.