The far north region of Trentino-Alto Adige, which borders both Switzerland and Austria, produces less than 1% of the nation’s wine and mostly by small family-owned wineries.  The vineyards clime up the ‘Y’ shaped valley where this used to be the main passageway from the time of the ancient Romans to the Nazi takeover.  The wine estates in Trentino-Alto Adige are generally called “Schloss,” which in German means castle or chateau.