[3] The first station to open was "Chacarita" terminus, a precarious building that served as terminal for the Buenos Aires Central Railway, originally a horse-drawn railway established by entrepreneur Federico Lacroze that built and operated a line to cities of Zárate in Buenos Aires and 4 de Febrero in Santa Fe.

The current underground station had been designed by the Lacroze Brothers with the intention of being a connection with the Buenos Aires Central Railway.

Stations on this line include Villa Devoto, Martín Coronado (which also serves Ciudad Jardín), Hurlingham and San Miguel amongst others.

The service used the standard gauge network of the General Urquiza Railway which runs through the provinces of Buenos Aires, Entre Ríos, Corrientes and Misiones.

In 2012 the service was briefly taken over by Trenes de Buenos Aires, however their concession was revoked by the National Government on the same year and remains without an operator to this day.