Look at what's behind Carnival and Mardi Gras celebrations around the world by learning about the festive season's origins and customs in Germany's Rhineland. Then hear what's been added to the World Monuments Fund's latest "watch list" of endangered cultural sites around the world. And get recommendations for must-see experiences in Alaska, along with tips for planning adventures across the Last Frontier.

Two English tour guides explain what Brits mean by a "rough and ready" pub and how to find some of the UK's best pub grub. Then a father-and-son tour-guiding duo invite us to fall in love with their favorite corner of France. And BBC journalist Eliot Stein shares insights from his travels in search of the world's oldest disappearing traditions, giving us a peek into what it's like to be the last to carry a cultural torch.

Listen in as an artist who helped restore Monet's gardens explains why the French painter first created these colorful gardens at his house outside Paris. Then hear how renovating a house on an island off the coast of Brittany can feed your wild side. And find out what happens when you marry an Italian…and your new in-laws live next door. Plus, an adventure cyclist shares the story of a timely romantic surprise that came when he needed it most.

This week we explore three of the most charming — and most popular — of Europe's Old World cities: Two tour guides get cheeky as they make the case for which of their own hometowns — Prague or Budapest — offer the best experiences for visitors with limited time in central Europe. And expert locals catch us up on changes afoot in Lisbon, offering strategies for navigating its more crowded sights so that you can still enjoy an authentic taste of today's Portugal.

We hear why the city of Potsdam — home to elegant Prussian palaces and parklands, all in quick reach of central Berlin — is worth a day's visit. Then we get a sense of what life was really like for the emperors of ancient Rome, with the help of classicist Mary Beard. And we travel back to 1978 with Rick and his longtime buddy Gene Openshaw as they retrace their post-college adventures along the infamous "Hippie Trail" from Istanbul to Afghanistan to India, all the way to Kathmandu.

Two German tour guides let us in on the back story behind Berlin's most memorable monuments to their country's turbulent history. Then two Turks tuck into a discussion of the traditional Turkish street eats, comfort foods, and desserts they recommend for a tasty visit to Istanbul. And an American who met — then married — a local artist in Bhutan shares tips for surmounting the logistical hurdles of visiting this remote Himalayan kingdom.

Travel Channel host Oneika Raymond recommends her favorite Miami neighborhoods to explore on a sunny getaway. Then friends from Scotland discuss the uniquely Scottish cultural icons that reinforce the small nation's strong sense of identity. And just in time for Burns Night, Perthshire-based troubadour Jim Malcolm explains what Robert Burns' poetry means to his compatriots — and sings some favorite Burns tunes.

Consider three distinctly different styles of historic European cities as we hear how Bristol has transformed itself from an industrial and maritime powerhouse into a creative center for the southwest of England — and how it rewards visitors who set aside at least a day for this city just a half-hour from well-touristed Bath. Then learn from a local about how the Catalan culture of Barcelona sets it apart from the rest of Spain. And discover what visitors have enjoyed for centuries along the cobbled medieval streets of the beautifully Belgian burg of Bruges.