Ratchaburi is a very old city going back to the ancient era. It was a town of the Suwannaphum Kingdom which was very prosperous. Ratchaburi occupies an area of 5,196 square kilometers and is located 101 kilometers from Bangkok along Phetchakasem Highway or 80 kilometers along the Highway No.35 (the Thon Buri-Pak Tho Highway).
Ratchaburi (often shortened Rat'buri) is one of the central provinces (changwat) of Thailand. Neighboring provinces are (from north clockwise) Kanchanaburi, Nakhon Pathom, Samut Sakhon, Samut Songkhram and Phetchaburi. In the west it borders Tanintharyi Division of Myanmar.
Ratchaburi means, "The land of the king." The province is full of cultural heritage, beautiful places, and historical sites. Ratchaburi covers 5200 square kilometers. It is located 80 kilometers west of Bangkok and borders Burma to the west with the Tanaosi range as a borderline. It has Mea Klong River through the center of town.