The Coolest Stuff on the Planet

Cumberland Island is about the size of Manhattan but has hardly any residents. How did it manage to retain its natural beauty? How did the wild horses get there? What is its connection to the family of Thomas Carnegie and to John F. Kennedy, Jr.?

Back in the Gilded Age, Newport was the hub of the summer social season for the rich and famous. People like the Vanderbilts and the Astors built some magnificent mansions which are now open to the public. Join us as we take a tour.

Why do some many new-agers flock to Sedona, Arizona? What is a vortex and what does it have to do with spirituality? What are some of Sedona’s other attractions? Tune in to learn more about Sedona.

Miami's South Beach is a great place to catch some rays and party to the max. But did you also know there are lots of museums, memorials and cultural activities going on? South Beach is home to the largest collection of art deco buildings in the world.

Summer’s almost here and it’s time for a road trip! We’re heading down the Pacific Coast Highway in California. We’ll stop at Monterrey, Carmel, and Big Sur, check out the magnificent scenery and discover other landmarks along the way.

The smallest sovereign country in the world, Vatican City -- officially known as the State of the Vatican City -- makes its home in the heart of Italy's capital, Rome. Explore this unique city-state and its world-renowned attractions in this episode.

Shared by Peru and Bolivia, Lake Titicaca is a high-altitude lake with an interesting mix of wild and human inhabitants. Take a tour of the world's highest navigable lake in this episode of The Coolest Stuff on the Planet.

In this episode, Rachel and Kathryn return to Dublin, Ireland -- a city too big for just one episode. Listen in to learn more about Dublin's place in Irish history, from its remarkable architecture to the world-famous Trinity College.

Home to some of history's greatest writers and one of the world's most iconic beers, Dublin is a city like no other. In this episode, Rachel and Kathryn explore the history, sights and sounds of Ireland's capital.

Yosemite isn't just the nickname of a cantankerous cartoon character -- it's also one of the oldest national parks in the world. Discover the natural delights of Yosemite in this video podcast from HowStuffWorks.com.