Author Paul Theroux shares the insights he gleaned about America from the people he met in the small towns and backroads of the Deep South. Then history professor Mark D. Van Ells returns with more suggestions for visiting places that honor the sacrifices of Allied troops in World War I.

We hear how Mostar — after suffering intense damage in the Bosnian war — has become an attractive tourist destination on the Adriatic cruise circuit, and get an update on its ongoing efforts to bridge old conflicts. And author Mark Adams divulges the four spots most likely to have inspired the legend of Atlantis. Plus, a Welsh tour guide describes the highlights of convivial, rejuvenated Cardiff.

Celebrate 500 editions of Travel with Rick Steves with a fond look back at a few of Rick's most memorable guest interviews from the past 12 years. Then get a taste of the elegant life in London as the author of the "Discriminating Guide to London" recommends spots around town where commoners can feel like royalty. And hear how Germany's pop music continues to reflect the intense cultural changes experienced by the last two generations.

The author of a guidebook series on fly fishing explains why it's such a popular sport worldwide. Then tour guides from Spain take listener calls to share up-to-date-advice for planning a great Spanish getaway. And a seasoned world explorer shares lessons learned on the road that could well transform your own daily life back at home.

Listen in to an exploration of the open-air markets of Paris, where souvenir shopping can be memorable in itself. Then hear why Belgian beer is so good that it's worth planning a trip around. And learn about the mysteries and history found in Slovenia's vast network of caves.

Friends of Rick's from the Czech Republic, Slovenia, and Bosnia share a Slavic perspective on what it means to participate in the European Union. Then novelist David Lida describes what poverty in rural Mexico looks like, and its role in the lives of many who enter the US illegally in search of work. Plus, Rick shares an audio snapshot from a restoration project in the heart of Warsaw.

Get insider advice for enjoying Naples — home to what has to be the liveliest street scene in Italy — without feeling put off by its in-your-face energy. Then listen in as a leading expert on international terrorism explains how and why groups such as ISIS and Al Qaeda have turned to human trafficking and kidnapping. Plus, hear a tour guide from Oslo's freshest tips for visiting Norway's nature-loving, eco-friendly, and expensive capital city.

The author of Frommer's Orlando guidebook returns with ideas for enjoying central Florida beyond the big theme parks. Then Tampa Bay Times reporter Craig Pittman discusses what makes his home state one of a kind — and much more than the target of punch lines. Plus, writer and trespasser extraordinaire Ken Ilgunas describes his hike from the tar sands of Alberta to the Gulf Coast of Texas.

Guides from Portugal describe the delights of Porto, and the winemaking traditions of the nearby Douro Valley in the north of Portugal. Then NPR's David Greene shares what he learned about everyday working-class Russians from his trips on the Trans-Siberian Railway. And friends from Scotland explain the cultural importance of their neighborhood pubs, and share tips for making yourself feel right at home on your next pub visit.

Author Terry Tempest Williams describes the various "personalities" of a dozen US national parks, and examines each one's contributions to the American character. Then historian Flannery Burke tells us how Arizona and New Mexico came to embody what we now think of as The Great Southwest. And travel writer Christopher Solomon enjoys getting dusty on a mountain-bike tour across southern Utah.