Rhaetian Railway - The Rhaetian Railway - Rhätische Bahn - Ferrovia Retica - Viafier Retica - RhB is a Swiss transport company that owns the largest network of all private railway operators in Switzerland. The RhB operates all the railway lines of the Swiss Canton of Graubünden/Grisons, except for the line from Sargans to the cantonal capital, Chur, which are operated by the Swiss Federal Railways (SBB CFF FFS), and the line from Disentis/Mustér to the Oberalp Pass, and further on to Andermat