Suphannabhum, later known as Suphan Buri, was a Siamese city-state of the western Chao Phraya basin, with key historical sites at Uthong, Nakhon Pathom, Suphan Buri and Ban Don Ta Phet.
Ancient ruin in Wat Phra Roob [th], Mueang Suphan Buri, dates to the Dvaravati period.
U-Thong style sculpture, found in Wat Kai Tia [th], Si Prachan district, Suphan Buri province
Main stupa at Wat Morakot, Mueang Suphan Buri, dates to the early 10th century.
Chedi at the Wat Kuti Song ruin, Mueang Suphan Buri.
Chên Li Fu was a short-lived polity on the northern shore of the Gulf of Siam, west of Chenla, known almost entirely from Chinese records of the years around 1200. It has been located in the Phraek Si
Suphannabhum
…David K. Wyatt named Suphanburi as one of three places, with Ratchaburi and Nakhon Chai Si, in which the polity Chinese records of about 1200 call Chen Li Fu might be sought, arguing from O. W. Wolters's finding that it held both a port and an inland capital, from the reconstruction of the ancient shoreline…
Ruins at Mueang Sing Historical Park in the western Menam valley, dating to the late 12th–early 13th century and showing strong Angkorian Bayon-style influence.
Aerial view of an ancient site at Nong Chaeng village, Don Chedi, Suphan Buri province, photographed in 1953 and proposed as a regional centre of Chên Li Fu.