Kuala Lumpur to Bangkok (Thailand) by train. Eastern & Oriental Express.
This luxury train actually starts out from Singapore as it heads north (but starting from Singapore would mean that you miss out on the Jungle Railway experience).
Web resources for this route:
Official Train Operator: www.belmond.com
The Eastern and Oriental: Great Train Journeys (Telegraph Travel)
If these articles have given you some inspiration, or have saved you some time and money, please say “Thanks” by donating a few pennies to my latest Kiltwalk Appeal (in aid of FareShare). Thank You.
[photo credit: commons.wikimedia.org]