in front of the ubosot one can find a stone stele from the year 1581. This stele contains the oldest mentioning of the founding date of Chiang Mai: the 12th of April, 1296 at 4 am. It also mentions that the ubosot was commissioned by King Mangrai and that Phya Saen Luang had it restored in 1571. The present building was built in the 19th century.