Pioneer (how they call them in the former Eastern Bloc) or Children´s Railway are a unique adventure for families especially in countries of the former “Eastern Bloc”.
Here operate kids a railway for everyone for leisure. (There is always an adult that overwatch the operations and the drivers are mostly adults aswell).
These pioneer railways were used to engage childs for a Worklife in the Transportation sector.
Many of these railways still survived. The most famous one is the Railway in Budapest with a 11kilometers long line. Other cities with such railways are Berlin, Dresden, Leipzig, Chemnitz, Gera, Cottbus, Görlitz, Plauen(electrified) all Germany, Kosice (Slovakia).
There are even more especially in Russia. I prefer Berlin (as iam living here), Budapest and Dresden.