Enjoy the romance of railroads as you ride on the Orient Express, climb the Andes, cross the U.S. on the Salad Bowl Express, and meet the Hobo King, who calls himself "Steamboat." From steam engines to sleek diesels, experience the majesty and adventure of trains past and present. Remember the days when thundering trains bridged the world's continents, nourished the pioneer spirit, ferried our troops to war, and provided politicians with mobile campaign platforms. Then settle into a first-class seat aboard the luxurious Orient Express, and glide through storybook cities from Paris to Istanbul. Celebrate a slice of history and ride the rails of the world. A National Geographic Production.

• Documentary