Start your full-day excursion to Mae Chan to visit the Yao and the Akha hilltribe villages. Continue on to Mae Sai, the farthermost northern border between Thailand and Burma, with its bustling market place. Lunch is served at a local restaurant. Drive on to the Golden Triangle area where the mighty Mae Khong River joining the Ruak River and forming the “triangle” with the borders of Thailand, Burma, and Laos convene. Visit also the Opium Museum. Then continue on to the old city of Chiang Saen (A.D.1260) on the steep banks of Mae Khong River opposite to Laos, to witness some magnificent ancient ruins and temples.