This temple museum was established under the cooperation of Wat Phra Chetuphon and the Fine Arts Department under royal suggestion by His Majesty the King.

      In 1988, the Fine Arts Department was assigned to put Wat Phra Chetuphon under restoration in honour of His Majesty the King on his 60 th birthday anniversary.

     During the restoration of the 4 Phra Maha Chedi Si Rajakarn, the priceless offerings enshrined within the 4 chedis were discovered. His Majesty the King suggested that all discoveries be imitated. The imitation offerings were enshrined within the 4 chedis to replace the original ones, which have been exhibited within the temple museum.

      These offerings were all made elaborately out of faith by court craftsmen of early Rattanakosin Period to display their homage to the Lord Buddha.

      It is located within the rear portico of the western Phra Vihara, near Phra Maha Chedi Si Rajakarn, with Khao Mor called Khao Sivalueng as a landmark in front.

     It has been a belief since ancient times to put holy objects representing the Lord Buddha inside Phra Chedi with intent to be offerings for Him. Phra Maha Chedi Si Rajakarn, there are 4 of them, were constructed to enshrine Dharma, the Buddha's teachings. Each was constructed under royal command, with gold and silver offerings including Buddha images and votive tablets being enshrined.