Doi Lao Khao, formerly known as Wat Roi Khao (Wat Hoikhao), was established around 1910 B.E. (the National Office of Buddhism states it was founded in 1201 B.E.) during the reign of Phaya Kuena, the sixth king of the Mangrai dynasty. During the late period of his reign, the Burmese army invaded and successfully occupied the Lanna Kingdom, leading to the abandonment of many temples in Chiang Mai. Later, King Kavilat led an expedition to retake Chiang Saen, which was still under Burmese rule, successfully bringing its people to reside in Chiang Mai. The people of Chiang Saen restored Wat Roi Khao and renamed it "Wat Loi Khao," adopting the name from their previous location. The temple received royal permission to establish its boundaries in 2040 B.E., and it underwent restoration from 2007 to 2008, preserving its original architectural style that dates back to 1865 B.E. The temple's assembly hall is located on the western side and is built with brick and mortar in Lanna architectural style. A major renovation was completed in 2002 B.E., with the pediment adorned with stucco carvings of the seated Buddha, mythological creatures, and floral patterns. The doors feature intricate designs of deva (celestial beings) and reliefs of the mythical Naga adorned with colorful glass. Inside the hall, the Phra Buddha Suphachok Si Loi Khao Mingmongkol, a highly revered Buddha statue, is enshrined, radiating blessings and auspiciousness.