Chiang Rai is the largest northernmost city in Thailand of king Mengrai in the year 1262 AD. Chiang Rai has three consecutive national border is Thailand, Laos and Myanmar or know as “Sam Liam Thong Kam”. Chiang Rai has a long history and use to be capital of Lanna kingdom since around 750 years and older than Chiang Mai around 50 years because has “Kam Muang” is the dialect and Chiang Rai has a prosperity second under Chiang Mai.