The Rhaetian Railway, abbreviated RhB, is a Swiss transport company that owns the largest network of all private railway operators in Switzerland. Headquartered in Chur, the RhB operates all the railway lines of the Swiss canton of Grisons, except for the line from Sargans to the cantonal capital, Chur, which are operated by Swiss Federal Railways, as well as the line from Disentis/Mustér to the Oberalp Pass and further on to Andermatt, Uri, which is operated by Matterhorn Gotthard Bahn. Inaugurated in 1888 and expanded from 1896 onwards in various sections, the RhB network is located almost entirely within Grisons, with one station across the Italian border at Tirano.
The Rhaetian Railway serves a number of major tourist destinations, such as St. Moritz and Davos. One of the RhB lines, the Bernina Railway, crosses the Bernina Pass at 2,254 metres above sea level and runs down to Tirano, Lombardy in Italy.
Wikipedia https://en.wikipedia.org/wiki/Rhaetian_Railway
More information on UNESCO's website http://whc.unesco.org/en/list/1276
Address 2378 Via dal Bernina, 7710, Switzerland
Coordinates 46°24'32" N 10°1'10.999" E