Lopburi is a province in the central region of Thailand. The province is divided into 11 administrative districts, and Mueang Lopburi district is the capital. With over 750,000 people, the province is Thailand's 36th largest area and 32nd most populous. There are eight neighboring provinces, Phetchabun, Chaiyaphum, Nakhon Ratchasima, Saraburi, Phra Nakhon Si Ayutthaya, Ang Thong, Sing Buri, and Nakhon Sawan.
Lopburi is a significant province historically, where many historical structures, artifacts, and prehistoric settlements have been discovered. In the past, Lopburi was called by the name Lavo, after the Lavapuri, city named after the second son of Ram.The kingdom had been ruled by an absolute monarch.
Wikipedia https://en.wikipedia.org/wiki/Lopburi_Province
Coordinates 14°48'8.384" N 100°36'52.869" E