Following the Mekong River in North Thailand
The Mekong River is at 2 parts the border between Thailand and Laos. Photo above is where the Mekong River starts to be the border at Chiang Saen in North Thailand, also infamous called the "Golden Triangle".
There is a kind of military base & police station with a beautiful garden and a Coffee Shop of course. At the end of the road there is a little walking path that will lead you to the real border-line with Laos (or you end-up in Laos).