It is one of Budapest's transport attractions located between the 2nd and 12th districts, most notable for that the service is provided by children under the supervision of adults.
The former name of the line was Úttörővasút (Pioneer Railway, in reference to the communist scouts), and now the official designation is MÁV Zrt.
The two end stations of the line are Széchenyihegy and Hűvösvölgy, located 235 meters lower in sea level.
The free and playful employment of children before the opening of the then called Pioneer Railway caused controversy amongst people.
For the railway construction several sites were considered, including the neighbourhood of the Gödöllő Palace, Margaret Island, and the Népliget, but finally in 1948 the Hungarian Communist Party chose the Buda Hills.