My Son lies in a narrow valley in Duy Tan Commune, Duy Xuyen District, Quang Nam Province. 70km southwest of Danang City, 20km away from the Tra Kieu Citadel, and 40km away from the ancient town of Hoi An. My Son is a group of temple-towers of Cham people. With its great value, in December 1999, the complex of My Son Cham Towers has been recognised as a World Heritage Site by UNESCO. Various researches by archaeologists and architects have revealed that at the beginning, there was only one small wooden temple built by King Bhadresvara I in late 4th century. In the 7th century, King Sambhuvarman had it rebuilt, using more durable materials From then on, successive Cham kings, when enthroned, had their temple-towers constructed as offerings to their gods. During seven centuries (7th to 14th century), such temple-towers mushroomed in My Son, turning this land into a cultural, and religious center of the Cham Kingdom.