The Bielersee region includes 80 wineries spread over 3 main areas; the overall surface is only 220 hectares (550 acres). Schernelz and Twann are located in the largest of the three areas of Bielersee wine region, which is situated on the north shore of the lake, in the foothills of the Jura. The second wine area is located southeast of the lake, and includes the villages of Erlach, Gampelen and Ins. The third, more confidential, is located on St. Peter’s peninsula, somehow in the middle of the lake. It is a nice walk and the place is known having hosted the philosopher Jean-Jacques Rousseau.