Head north from Chiang Rai with a private guide to visit northern Thailand villages and attractions like Doi Tung Royal Villa, a royal-residence-turned-museum. Stop in hill tribe villages, check out the Hall of Opium museum in the Golden Triangle region, and take a boat ride on the Mekong River to Don Sao, a tiny island in Laos. You'll see the point where Thailand, Laos and Myanmar meet, and learn about the world's opium trade, both past and present. This full-day private tour allows you to experience the area and its culture in an intimate way with a guide.