The Gyermekvasút or Line 7 is a narrow gauge railway line in Budapest, which connects Széchenyihegy and Hűvösvölgy and is 11.2 kilometres long. The former name of the line was Úttörővasút, and now the official designation is MÁV Zrt. Széchenyi-hegy Gyermekvasút.
Kindereisenbahnmuseum in Kühlental