The Bernina Express is widely considered the most beautiful and dramatic train ride connecting Italy and Switzerland. Running from Tirano, Italy, to St. Moritz or Chur, Switzerland, this UNESCO World Heritage route takes you from the palm trees and vineyards of Italy up to the massive Morteratsch Glacier in just a few hours. The most iconic moment is crossing the Brusio Circular Viaduct, a 360-degree spiral that allows the train to gain elevation in a very small space. Unlike the Glacier Express (which stays entirely within Switzerland), the Bernina Express offers a stunning contrast of Mediterranean and Alpine landscapes. Another top contender is the Gotthard Panorama Express, which combines a historic train journey through the Gotthard tunnel with a steamboat cruise across Lake Lucerne. However, for sheer "high-mountain" drama and engineering marvels like the Landwasser Viaduct, the Bernina Express remains the gold standard for travelers seeking the most visually impactful rail journey across the border in 2026.