The museum exhibition located in the lobby of Central Station in Sofia was inaugurated in 2002 to commemorate the 135th anniversary of the establishment of railway communications in Bulgaria. The exhibit features a narrow-gauge train consisting of a Henschel-Cassel narrow-gauge locomotive and a passenger car. These vehicles were once in service on the main Bulgarian narrow-gauge railway line, running from Radomir through the Struma River valley to Valovishta, as well as on branches to Dupnitsa, Bobov dol, Kocherinovo (Struma) to the Rila Monastery, and Gen. Todorov to Petrich.
