All Aboard! Play It Safe. Take a Train in Vietnam

There are no plastic seat trays, no cramped leg muscles and, most of all, no fear-of-flying tremors. Instead, passengers are cocooned within wood-paneled cabins lit with brass lamps. A plush dining car with red-cushioned seats serves grilled steaks and French wine. And, best of all, a fluffy cotton comforter awaits weary travelers at the end of the day. Lulled by the rhythmic, rattling sway, even the most insecure voyager would find worries melting into a dreamless sleep in almost no time.

After all, what could be more relaxing than taking a luxury train ride in the newly proclaimed safest country in...