The Rhaetian Railway in the Albula/Bernina Landscapes represents an exemplary railway development for the disenclavement of the Central Alps at the beginning of the 20th century. The Rhaetian Railway offers a wide diversity of technical solutions for the establishment of the railway in often severe mountain conditions. Criterion (ii): The Rhaetian Railway of Albula/Bernina constitutes an outstanding technical, architectural and environmental ensemble. Criterion (iv): The Rhaetian Railway of Albula/Bernina is a very significant illustration of the development of mountain railways at high altitudes in the first decade of the 20th century. The railway infrastructures of the Albula and Bernina lines form an authentic ensemble of great integrity.