In 1027 the area of Bolzano and the rest of the diocese was conferred, by the emperor Conrad II from the Salian dynasty, upon the bishops of Trent. In the late-12th century, the bishop founded a market town, along the Lauben thoroughfare. The town therefore became an important trading post on the Transalpine Augsburg-Venice route over the Brenner Pass, elevation above sea level, within the Holy Roman Empire.