The
wonders of the alpine Rhaetian Railway, a Unesco world heritage site.
The viaducts were built
around 1900 and are still in use today, serving the modern railway
practically unchanged. In 2008, the Albula Line became a Unesco World
Heritage site. But after more than a hundred years in service, the
viaducts are in need of renovation.
(Building Switzerland is a national television series produced by the
Swiss Broadcasting Corporation, swissinfo.ch�s parent company.)