Try to do 4 weeks though… 3 weeks is going to be very tight for all of these places. Hey Isabel — just replied to your email. Not everywhere in Southeast Asia is equally cheap. Lao Peoples Democratic Republic. There are good railway connections all the way from the north to south, including sleeper trains that let you efficiently cover a lot of ground.
Dramatic landscapes also dominate the central and northern parts of Vietnam.
Where to Travel in Southeast Asia: Countries at a Glance