Sustainable tourism and Phong Nha example

Bradt guidebook author Joshua Zukas, who focuses exclusively on Vietnam, shares why he enjoys challenging misconceptions about his adopted home. And a writer who has spent his life captivated by the mighty Mississippi River takes us on a virtual tour of America's great waterway, from Minnesota to the Gulf of Mexico.

For more information on Travel with Rick Steves - including episode descriptions, program archives and related details - visit www.ricksteves.com.