Arosa was discovered by the outside world in 1883 when Dr Otto Herwig-Hold, on a skiing tour of the mountains south of Chur, came across the remote hamlet. The isolated village has since developed into one of Graubünden's most acclaimed resorts, yet it's still small enough to have retained its atmosphere and lacks even a trace of the hotshot swagger of Davos or St Moritz.Beware that almost everything – shops, hotels, attractions, walking routes – is closed during off-season (mid-April to mid-June & mid-Oct to mid-Dec).