Chiang Rai, the former capital of the great Lanna Kingdom, is a fascinating province filled with cultural and natural wonders, including the Golden Triangle where Thailand, Laos, and Burma come together.
Recently tourism has boomed in Chiang Rai, where visitors have come to explore the pristine natural beauty of the countryside and immerse themselves in the indigenous culture, including those of a variety of different hill tribe communities. Fortunately for tourists, Chiang Rai is also a center for community development projects, helping rural villagers develop their attractions without adversely affecting their natural and cultural assets.
(http://www.tourismthailand.org/where-to-go/cities-guide/destination/chiang-rai/)