“Chiang Rai is the northernmost large city in Thailand. It was established as a capital city in the reign of King Mangrai, in 1262 CE.
The Golden Triangle, the tripoint of the Thailand, Laos and Myanmar borders, is 55 kilometres (34 mi) north-east of Chiang Rai city.”[1]
[1]-https://en.wikipedia.org/wiki/Chiang_Rai_(city)
