We'll explore the historical riches of Potsdam, Germany, and we'll hear how Athens, Greece has grown into a visitor-friendly destination, complete with a new Acropolis museum. We'll also get a dispatch from adventure cyclist Willie Weir from his favorite square in Madrid, and we'll open the phones for your nominations for a favorite city to explore.

Get inspired to take a classic American road trip along the Lincoln Trail, from Springfield, Illinois to Gettysburg and the Potomac. We'll also hear about the special travel guide that African-Americans relied on in the mid-20th century to find a welcome on the road. Plus, TV travel host Samantha Brown shares how to enjoy your next long flight overseas.

Rick interviews a guide to the street markets of Paris, where souvenir shopping can be a destination in itself. Hear how the beer in Belgium is so good, it's worth a special trip. Also, learn about the mysteries and history you can find in the caves of Slovenia.

Guides specializing in eastern and central Europe highlight the charms of Kraków, Poznań, Warsaw, and Gdańsk, where the prices can be as friendly as the people. Also, Fred Plotkin explains how this is a really big anniversary year for opera. He recommends performances celebrating the birthdays of Wagner, Verdi, and Benjamin Britten.

Naturalist Terry Tempest Williams tells us why her dedication to the rugged beauty of the Utah wilderness where she lives requires her to speak out on its behalf. Also, a tour guide from Italy describes how he gets away from it all, riding a motorbike across the vast expanses of the Sahara desert in North Africa.

Discover how you can enjoy Mexico and the Netherlands like you're one of the family. The authors of The People's Guide to Mexico recommend how to make your next trip south of the border extra-fun and culturally-rewarding. Also, Rick looks into family-friendly cultural treats that you can enjoy in the Netherlands, including Europe's guilty TV pleasure, the annual Eurovision Song Contest.

Rick learns about tourism in the Palestinian Territories on the West Bank of the Jordan. Also, the host of The Amazing Race, Phil Keoghan, describes how a near-death experience at age 19 convinced him to make his travel fantasies come true. He tells us how leaving "No Opportunity Wasted" can add a lot of memorable adventures to your life.