Over the course of 700 years, these salt mines have become home to numerous unique statues, artifacts and works of art. Join Rachel and Kathryn as they investigate the iconic Polish salt mines in this episode.

Mauna Kea isn't just the highest point in Hawaii. It's also the best astronomical site, and sacred in Hawaiian culture. In this episode, Kathryn and Rachel take a closer look at one of Hawaii's most famous volcanoes.

Also know as 'The Red City,' Marrakesh has a long, unique history filled with fascinating events. Tune in to learn more about the role of bargaining in the culture, the most happening square in the world and more.

Copenhagen is the capital of Denmark, which happens to be one of the happiest countries on the planet. It's not hard to see why -- from the famous flatbread to the ubiquitous bicycles, Denmark is uniquely cozy. Tune in to learn more.

Why is Palau such a famous dive site? Join Rachel and Kathryn as they explore some of Palau’s most famous attractions, along with its culture and food (including a local “delicacy”).

Frankfurt isn't just the fifth-largest city in Germany -- it's also home to some of Europe's most fascinating architecture, including a surprising amount of skyscrapers. Join Rachel and Kathryn for a closer look at Frankfurt.

The Badlands of North and South Dakota get their name from the Sioux Indians, who found the area harsh and arid. But don't let the name fool you -- the Badlands are full of majestic views and unique formations sculpted by continual erosion.

When Lucy Maud Montgomery wrote Anne of Green Gables, she drew inspiration from the arresting landscape of Canada's Prince Edward Island. Join Rachel and Kathryn as they explore the history and attractions of Prince Edward Island.

U.S. Highway 61 runs between New Orleans, Louisiana and Wyoming, Minnesota. This isn't an ordinary stretch of road -- it's also home to some of the America's most important music history. Join Rachel and Kathryn as they traverse the history of Highway 61.

With loads of fascinating sights and miles of history, route 66 is one of North America's most iconic roads. Join Rachel and Kathryn as they delve into the story of Route 66, presenting 6 fascinating facts about this uniquely American roadway.