This archaeological wonder, which is believed to date back 1,700 years, was proposed to Unesco in 2019.
The remnants of the city are located on 4.7 square kilometres of land in Si Thep district, about 200 kilometres northeast of Bangkok.
It was home to a late prehistoric community before becoming an important town in the Dvaravati or Mon Kingdom era (1,400-1,000 years ago). It then flourished for the next 200 years during the Khmer Empire before being abandoned.
