What is "aarbergergasse"

The Aarbergergasse (" Aarberg Lane") is one of the streets in the Old City of Bern, the medieval city center of Bern, Switzerland. It was originally the most important of the five streets that were part of the Äussere Neustadt, which was the section outside the city walls. One fountain, the Ryfflibrunnen on the Aarbergergasse is listed on the Swiss inventory of heritage site of national significance and it is part of the UNESCO Cultural World Heritage Site that encompasses the Old City.