I was traveling in North Thailand and did visit the (in)famous Golden Triangle in Chiang Saen district (in Chiang Rai province) where the Mekong River for the first time becomes the border between Laos and Thailand. The name Golden Triangle refers to the all area in the 3 countries Myanmar, Laos and Thailand that was / is famous for its opium production & transport. From Chiang Sean you can see on the left side of the Mekong River Burma (Myanmar) and on the right side Laos, while you are standing in Thailand. And just 200 km north is China. If you are interested to visit Chiang Rai or any other place in Northeast or North Thailand, then feel free to contact me by email at The Little Elephant Traveling in Thailand.
Update : Everybody always calls this Chiang Sean but actually it is Ban Sob Ruak in Tambon Wiang in Chiang Saen district in Chiang Rai province in North Thailand. For more about Chiang Saen see my postings about Chiang Saen.