The Golden Triangle Park is an area about 45 minutes north of Chiang Rai where the Mekong River separates Thailand, Myanmar and Laos. For many years this was a major Opium production region, but the crop has since been eradicated from the area. Stop by the Golden Triangle monument (pictured), then head to the Hall of Opium Museum down the road. The museum was commissioned by the Thai royal family in their efforts to educate the public on the history of the opium industry and its effects on opium users.