One thousand years ago Chaiya was the most important city.
There are many archaeological sites and monuments in the area, such as Wat Phra Borommathat Chaiya, Wat Wiang etc.
The archaeological evidence indicates that the city of Chaiya was a human settlement dating back to the prehistoric period.
The famous arts and culture of Chaiya, known as "Srivijaya", were influenced by Mahayana Buddism.