CHUR, Switzerland, Dec. 15 (Xinhua) -- A UNESCO World Heritage Site since 2008, the Albula-Bernina railway, one-third of the century-old Rhaetian Railway (RhB), spans 122 km from Thusis, Switzerland, to Tirano, Italy, traversing 196 bridges, 55 tunnels, and 20 towns across alpine landscapes.
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