PO Thailand Chiang raiChiang Rai is the northernmost large city in Thailand. It was established as a capital city in the reign of King Mangrai, in the year 1262 AD.

The city was founded by King Mangrai in 1262 and became the capital of the Mangrai dynasty. Subsequently, Chiang Rai was conquered by Burma and remained under Burmese rule for several hundred years. It was not until 1786 that Chiang Rai became a Chiang Mai vassal. Siam (Thailand) annexed Chiang Mai in 1899, and Chiang Rai was proclaimed a province of Thailand in 1933.