Diagonal Norte is a station on Line C of the Buenos Aires Underground. From here, passengers may transfer to Carlos Pellegrini Station on Line B or 9 de Julio Station on Line D and Metrobus 9 de Julio. It is located near the Obelisco de Buenos Aires.
The station was opened on 9 November 1934 as the western terminus of the inaugural section of the line, from Constitución to Diagonal Norte. On 6 February 1936 the line was extended to Retiro.
Wikipedia https://en.wikipedia.org/wiki/Diagonal_Norte_(Buenos_Aires_Underground)
Address 918 Avenida Roque Saenz Peña, Ciudad Autónoma de Buenos Aires, Argentina
Coordinates -34°36'17.168" N -58°22'46.242" E