Doi tung, the highest mountain in Chiang Rai where once used to be the biggest Opium fields . Visit her Royal Villa and one of the most beautiful Garden where flowers are bloom all year around. In 1988 Her Royal Highness the King’s mother initiated the Doi tung Development project to Regenerate the forest and improve the lives of people living in the heart of the Golden Triangle, ending their dependence on Opium growing and use, Prostitution and child labor.