The sanctuary was recognised as a world cultural heritage site by UNESCO in 1999. It comprises eight groups of 71 monuments built throughout the 7th to 13th centuries. Owed their spiritual origins to the Hinduism of the Indian sub-continent, My Son temples were built to the Hindu divinities such as Krishna and Vishnu, but above all Shiva.

The first construction of My Son dated back to the 4th century under the reign of Bhadravarman for the worship of God Shiva-Bhadresvara. But later on, the temple was destroyed.

At the beginning of the 7th century, King Sambhuvarman had it rebuilt and rebaptised Sambhu-Bhadresvara. Each new monarch came to My Son after his accession to the throne for the ceremony of purification and to present offerings and erect new monuments, which explains why My Son was the only place where Cham art flourished without interruption from the 7th to 13th century.

According to the UNESCO, conservation of the My Son monuments began in the early part of the 20th century CE soon after their discovery in modern times by French archaeologists. As a result of wars, many tower temples were damaged. However, preservation work has been carried out and the remaining tower temples have been maintained and are well-preserved.