Settle in for what's famously called the 'world's slowest express train' and one of the most breathtaking journeys on the planet. From your seat in a panoramic carriage, you'll glide through the heart of the Swiss Alps, crossing hundreds of bridges and passing through dozens of tunnels. The scenery is simply unforgettable, from the dramatic Rhine Gorge to the iconic Landwasser Viaduct, connecting the glamorous mountain resorts of Zermatt and St. Moritz.