The Glacier Express is widely considered the most famous train ride in Switzerland, often marketed as the "slowest express train in the world." Connecting the two major mountain resorts of Zermatt and St. Moritz, the journey takes approximately eight hours to cover roughly 290 kilometers. The route is a masterpiece of railway engineering, featuring 91 tunnels and crossing 291 bridges, including the iconic Landwasser Viaduct. Passengers travel in modern panoramic cars that offer unobstructed views of the Swiss Alps, deep gorges, and snow-capped peaks. In 2026, the "Excellence Class" remains the most sought-after experience, offering a five-course meal and concierge service as the train climbs over the Oberalp Pass at 2,033 meters. While the Bernina Express is also world-renowned for its UNESCO heritage status, the Glacier Express remains the quintessential Swiss rail experience for its sheer variety of landscapes and its legendary connection between the Matterhorn and the glamorous Engadin valley, making it a "bucket list" item for global travelers.