The subway stations in Buenos Aires are usually plain and functional. The Subte, as the Porteños call their underground system, is reliable and cheap. The station Rio de Janeiro belongs to the historic A line. The first section of 7.13 km was inaugurated in 1913 and had made Line A the first underground line ever build in Buenos Aires and in the whole Southern Hemisphere. Today the line is still growing and scheduled to be extended. Recently, in December 2008, the Carabobo station was opened to the public.