My friend who has lived here for 12 years told me about riding toy steam trains. If she had not, I would never have found this event. From what she tells me, this club (remember, there are clubs for everything, like trams and orchestras) opens its grounds for four days over the Ascension holiday.
(Ascension (called Auffahrt in German) is 40 days after Easter, always on a Thursday. It is a holiday in many Catholic regions. Here the shops are closed, and the schoolchildren have the Friday off from school, too.)
During the year the Verein members work on their toy steam trains and the grounds. There are bridges and tracks, like a very large toy train set.
For CHF 3, you can take a ride on one of these trains. It lasts about 10 minutes.
We were not the only people in line without children. Certainly fun for all ages.
More pictures at glampinginswitzerland’s Instagram.
Glamping in Switzerland 
I remember seeing a train this size at the Griffith park travel town. So fun!