Landwasser Viaduct It's one of the most iconic parts of the Glacier Express, curving around into the Landwasser tunnel. It's a moment you'll remember forever. The viaduct itself is a landmark to behold, but once on top of it, the panoramic view is unlike any other.

While the entire eight-hour journey across the Swiss Alps is stunning, the "best" and most iconic part of the Glacier Express is the section between Chur and St. Moritz, specifically the Albula Line. This stretch is a UNESCO World Heritage site and features the famous Landwasser Viaduct, where the train curves dramatically over a 65-meter-high stone bridge before plunging directly into a cliffside tunnel. Another highlight considered "the best" for high-altitude scenery is the Oberalp Pass, which marks the highest point of the journey at 2,033 meters (6,670 feet). Here, the landscape transforms into a high-alpine tundra, offering 360-degree views of snow-capped peaks and the source of the Rhine River. Travelers also highly praise the Rhine Gorge, often called the "Swiss Grand Canyon," where the train snakes alongside turquoise waters and towering white limestone cliffs. If you have limited time, most experts recommend focusing on the eastern half of the route (Brig to St. Moritz) to capture the most dramatic engineering feats and the most diverse geological landscapes of the entire Swiss rail network.