Doi Tung namely "Flag Peak" in Thai. The word "Tung" means 'Flag' in the northern Thai word. It is located between Mae Chan and Mae Sai. King Achutarat of Chiang Saen ordered a gient flag to be flown from the peak to mark the spot where 2 chedi were constructed in AD 911.
The late Princess Mother (the king's mother) built the Doi Tung Royal Villa, a summer palace, on the slopes of Doi Tung near Pa Kluay Reservoir. The fascinating and beautifully landscaped namely Mae Fah Luang Garden is mostly attracted by the local Thai, surprisingly I don't see a lot of tourist there, that such a nice place to visit and explore. The royal villa itself has been converted into a museum.
By reaching the peak of 1800m above sea level, Wat Phra That Doi Tung is built around the twin Lanna-style chedi. The chedi were renovated by famous Chiangmai monk Khruba Sriwichai early in the 20th century.