The approximately 1 ½ hours tour can be booked from January to June on Tuesdays and Wednesdays. From mid August to mid December, in addition on Thursdays. Guided tours are available in the morning or in the afternoon. No tour during summer and christmas holidays.
CHF 7.–/person / CHF 5.–/student (little present incl.)
advance payment by bank transfer or in cash on arrival