Nakhon Ratchasima province in the context of "Lop Buri Province"

Lopburi (Thai: ลพบุรี, RTGS: Lop Buri, pronounced [lóp bū.rīː]) 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 720,000 people, the province is Thailand's 31st largest area and 35th 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.The kingdom had been ruled by an absolute monarch.

Chaiyaphum (Thai: ชัยภูมิ, pronounced [tɕʰāj.jā.pʰūːm]; Northeastern Thai: ไซยภูมิ, pronounced [sa᷇j.jā.pʰu᷇ːm]) is one of Thailand's seventy-six provinces (changwat), located in central northeastern Thailand, also called Isan. Neighboring provinces are (from north clockwise) Khon Kaen, Nakhon Ratchasima, Lopburi, and Phetchabun.

Saraburi (Thai: สระบุรี) is one of the central provinces (changwat) of Thailand. Neighboring provinces are (from north clockwise) Lopburi, Nakhon Ratchasima, Nakhon Nayok, Pathum Thani, and Ayutthaya. It is believed to have been constructed in the year 1548 during the reign of King Maha Chakkraphat of Ayutthaya as a centre for recruiting troops.