My Son is Vietnam’s most important ancient ruin. It served as a centre of Hinduism for the once mighty Cham kingdom that dominated central and southern Vietnam for centuries. Time and American bombs have taken a terrible toll on the site but it remains an excellent excursion from Hoi An – especially for those also interested in the temples of the rival Khmer kingdom at Angkor in Cambodia.
The first thing to note is that while there is an important historical connection between the Cham kingdom of central Vietnam and the Khmer kingdom of Angkor, you should avoid comparing the surviving monuments. Angkor is without peer. My Son and most monuments anywhere are dwarfed by the Angkorian temples.
My Son is about 1 hour drive from Hoi An and is best reached by motorbike or organized tour from Hoi An which will cost you around 7 USD, going by bus and back by bus or 10 USD going by bus and back by boat.