Three countries
Thailand, Laos and Myanmar at once.
Vyacheslav Argenberg — CC BY 4.0 · SaiLp — CC BY-SA 4.0 · deror_avi — CC BY-SA 3.0
The point where the Ruak River meets the Mekong, and where the borders of three countries converge: Thailand, Laos and Myanmar, all visible together from a single bank. For decades the area was among the world's biggest opium-growing regions, hence its name; today it is a quiet riverside stop for visitors. On the Thai bank are a large golden Buddha seated on a ship-shaped platform, the famous Golden Triangle sign for photos, and hillside viewpoints. Nearby is the Hall of Opium, an excellent modern museum telling the history of opium, its wars and its harm through interactive displays, for about two hundred baht, suitable for teenagers and adults. Viewing from the bank is free. Short boat trips on the Mekong circle the confluence, some stopping at a Lao island market; the crossing-fee rules there change, so ask before boarding and carry your passport. A day trip from Chiang Rai, usually combined with Doi Tung Royal Villa and the historic town of Chiang Saen. The area is loveliest in the morning when mist hangs over the river.
Thailand, Laos and Myanmar at once.
An excellent modern museum.
A loop around the confluence.
Sop Ruak, Chiang Saen, about 70 km north-east of Chiang Rai
Short trips to the island usually need only a small fee, not a full visa, but the rules change, so ask the operator and always carry your passport.