The Rhaetian Railway in the Albula / Bernina Landscapes was added to the list of UNESCO World Heritage Sites in 2008. I've got these cards, the 1st in 2009, sent by Doris and Óscar sent me the 2nd just a few days ago.
"The RhB (Rhaetian Railway) has the largest network of all the private railways in Switzerland. The company operates most of the railways in the south-easternmost canton of Graubünden since the Federal Railways SBB-CFF-FFS extend only a few kilometres over the cantonal border to the capital at Chur.
RhB serves the major tourist centre of St Moritz and Davos, and one of the lines, the Berninabahn, crosses the Bernina Pass to the Italian border and on to Tirano, where there is a link to the Italian railways. - in: wikipedia
© photoglob Zürich
Rhaetian Railway in the Albula / Bernina Landscapes, brings together two historic railway lines that cross the Swiss Alps through two passes. It features an impressive set of structures including 42 tunnels and covered galleries and 144 viaducts and bridges.