Prang Sam Yot, originally a Khmer Hindu shrine, has three prangs that used to represent Brahma, Vishnu, and Shiva (the Hindu trinity). It was later converted to a Buddhist shrine.

The old town of Lopburi dates back to the Dvaravati era (6th - 13th century). It was originally known as Lavo or Lavapura. After the foundation of the Ayutthaya Kingdom in the fifteenth century, Lopburi was a stronghold of Ayutthaya's rulers. It later became a new royal capital during the reign of King Narai the Great of the Ayutthaya kingdom in the middle of the 17th century. The king stayed here for about eight months a year. Today, Lopburi is renowned for its Crab-Eating Macaques that live amid the Khmer temple ruins of the city.