The Poschiavo Valley is the southern valley of Canton Grigioni (Switzerland).
It borders Italy on three sides and, through Bernina Pass (2323mt.), joins the region of Engadina (Switzerland) and Tirano in Valtellina (Italy).
So we can consider it a valley nearly Mediterranean; furthermore here people speaks Italian too.
One of the main attractions of the valley is the Bernina Express, the red little train of the Retic Railways that, since almost a century, cross all the valley from Tirano to St. Moritz; about 60km in 2.30 hours time.
The little train scramble quickly; a succession of helicoidal tunnels allows it to go up crossing woods and surrounding little lakes at high altitude.
The gradient reach even 7%, that is incredible considering that it is not a rack railway.