Once - 30 de Diciembre is a station on
Line H of the
Buenos Aires Underground and is located at the intersection of
Pueyrredón and
Rivadavia avenues in the
neighbourhood of
Balvanera. From here, passengers may transfer to the Plaza Miserere station on
line A and, through it, transfer to the
Once railway station, the central terminal of the
Domingo Faustino Sarmiento Railway and
Sarmiento Line. The station was inaugurated on two occasions. The
civil engineering was inaugurated 31 May 2007, but the opening for passenger service was held on 18 October 2007. The station was opened as the northern terminus of the inaugural section of the line, with
Humberto I,
Venezuela,
Caseros and
Inclán stations. On 6 December 2010 the line was extended to
Corrientes. The Studio of Architects Berdichevsky-Cherny participated in the design of the station. File:Línea H, pasillo para combinar con línea A en estación Once (Buenos aire, noviembre 2008).jpg| File:Línea H, pasillo para combinar con línea A en estación Once 02 (Buenos aires, noviembre 2008).jpg| File:Línea H, escaleras en estación Once (Buenos Aires, noviembre 2008).jpg| ==History==