1. The Bernina Pass: This is where the train climbs to its highest point, offering some of the most iconic vistas of snow-capped peaks, rugged terrain, and alpine lakes. 2. Brusio Spiral Viaduct: Located between Poschiavo and Tirano, this remarkable spiral viaduct is a highlight of the journey.

While the entire 4-hour journey from Chur to Tirano is spectacular, the most beautiful and iconic section is undoubtedly the Brusio Spiral Viaduct and the Alp Grüm pass. The Brusio Viaduct is a masterpiece of engineering that allows the train to gain or lose elevation in a tight valley by traveling in a 360-degree stone circle. Another high point is the Ospizio Bernina, the highest point on the line at 2,253 meters (7,391 feet), where the train skirts the milky-white Lago Bianco and the black Lej Nair. The transition from the high-alpine glaciers of the Bernina Range down to the palm trees and vineyards of Italy's Valtellina valley is a dramatic geographical shift that defines the "Express" experience. In 2026, the panoramic "Panorama Cars" with floor-to-ceiling windows provide an unobstructed view of the Morteratsch Glacier, which is often cited as the most "jaw-dropping" moment for first-time travelers. Many enthusiasts recommend sitting on the right-hand side when traveling south to get the best views of the lakes and the spiral viaduct.