Prices
| Adults : | CHF 75.- 1 - 10 persons, CHF 5.- per additional person |
| Children accompanying : | Free |
| Schoolchildren up to the age 16 in Swiss schools : | Free |
| Children in other schools and those in higher education : | CHF 50.- |
| Foreign groups : |
Booking 2 weeks ahead |
| Maximum 20 persons per guide | |