The above ground railway system, although just as efficient as the subway, takes a bit more getting used to because each line is owned by different companies and this dictates the safety and cleanliness of the ride. The train network is laid out in the shape of a star. Almost all the suburbs are accessible through the train system and more information can be found in city maps/guides in roadside shops and on the transport company websites:
Metrovias: http://www.metrovias.com.ar/V2/Home-En.asp?lang=EN
Trenes de Buenos Aires (TBA): http://www.tbanet.com.ar/inicio.asp
The long-distance South American train company, Trenes del litoral: http://www.trenesdellitoral.com.ar/
Metropolitano: 0800 1 2235 8736
Ferrobaires 4306 7919;
Website: www.ferrobaires.gba.gov.ar