Doi Tung , (70 images) The Doi Tung Garden outside Chaing Rai is a fantastic a botanic garden. The layout and flowers are breathtaking. Doi Tung has traditionally been an area at the centre of Thailand’s opium production, and with a ready supply of the drug in the area, drug use was prevalent, especially amongst the poor. The Princess Mother built a summer palace in the area and initiated the Doi Tung Development Project. See the pictures we took. Photo: Knut Øyvin Skaar - Bangkok