The name of this attraction translates as "Swiss Steam Park". A number of miniature trains (size 1:4) run inside a beautiful miniature landscape where truly existing bridges and buildings have been reproduced. For instance there is, among other things, an impressive replica of the George Washington Bridge in New York.
Not all the trains are steam train, there are replicas of more modern ones as well. All the circulating locomotives tow wagons where people (adults as well as children) can sit. A tour on one of the trains is included in the entrance fee. There is also a train that can be used by people on wheelchairs.
I was particularly impressed by the castle you can see in my picture here, surrounded by a vineyard with real vines.
The park is open from mid-March to mid-September, with opening times that change according to the season. In summer it is open every day from 10 am to 6 pm.
As for any other place on the banks of the Leman lake, a walk by the lake is mandatory, to take in the beauty of the surrouding landscape.
I am sorry that the weather was not too nice when I visited Bouveret, so the sky in my picture is a bit too dark to do full justice to the beauty of this lake.
The road you see in the picture is for pedestrians only, because the main road is higher on the mountain, in fact you can see here the promenade from above because I tok this picture from that road.
Bouveret can be reached by train. It is situated on the line of regional trains between Sion and St. Gingolph, with trains every hour between 5 am and 11 pm. The main stop on this line, allowing changes to other train lines (e.g. to Montreaux, Lausanne, Geneva) is St. Maurice, about half an hour away from Bouveret (direction Sion). The town on the other end of the line, St. Gingolph, is at the border with France.
The station itself in Bouveret is a very nice building, as almost anywhere in Switzerland, but it does not have any services, not even a ticket office. The only service you will find there is the Tourist Information Office.