In this episode, we're celebrating Italy and following the Neapolitan Line. Travelling west from the gelato shops of the seaside town of Pescara, we cross Italy through the remote and wild Apennine Mountains down to the bustling city of Naples on the west coast. Years ago, for many Italians, this was a one-way trip, their ultimate destination being the US. But the line also helped some to stay, such as the Pelino family, who used the line to create a confectionery business in the small town of Sulmona. Almost 150 years later, it is still selling its products worldwide. Rising into the Apennines on coaches that date back to the 1920s, winter descends. The heavy snow gives this section of the line the nickname ‘Italy's Trans-Siberian'. And as we pull into Roccaraso, nearly 4,000 feet above sea level, we really feel like we're in Russia. It's here we meet the town's most famous resident, Juan Carrito, a two-year-old marsican bear, who likes to hang around the station at night, before wondering off into the vast expanse of the National Park of Abruzzo each morning. Coming out of the snow, we pull into Castel di Sangro. Although it has a population of only 6,000, its football team was once blessed by the ‘Miracle of Castel di Sangro', rising to the Italian equivalent of the championship league for two glorious seasons. Our journey ends on-board the royal carriages preserved in the old locomotive works of Pietrarsa, next to Italy's very first railway line, linking the royal palace to Naples itself.

This is a scenic railway journey like few others. Starting a mile above sea level in Colorado's state capital, Denver, our train, the Rocky Mountaineer, makes its way through Wild West country to Moab in the state of Utah. On the way, we'll mine for gold, just as the first ‘fifty-niners' did in the mid-19th century. At almost 12,000 feet, we'll ski the continental divide, where any water falling to the west heads to the Pacific and any to the east the Atlantic. Entering the red rocks of the true Wild West, we'll pay homage at the grave of Doc Holliday, the dentist-turned-gunslinger who died peacefully in Glenwood Springs, Colorado. At the once thriving town of Cisco, Utah, we'll meet one of the last four residents. Their town began dying when the railroad switched to diesel and the trains no longer stopped there for water. Just before our train gets to Moab, we'll be in the water ourselves — white-water rafting down the mighty Colorado River.