The big archaic Buddha image situated in Wihan Phra Mongkhon Bophit is not known when he was casted and who modeled the image. It was only said that in King Songtham reign, the image situated in the east of the wihan was moved to the new place for 200 meters farther from the old one. Then a building with the roof of Thai-styled canopy was built to cover him, and the old place was used to build a crematorium for the former kings.