Edificio Ferrocarriles del Estado, Rationalist government building in Retiro district, Buenos Aires, Argentina.

The Edificio Ferrocarriles del Estado is a rationalist building in Puerto Nuevo, Retiro, now housing the National Chamber of Appeals for Economic Crimes. Its facade is clad up to the first floor in 4,500 m² of pink granite from San Luis province, with the upper floors rendered in Super Iggam. From the fourth floor the plan narrows into a central body and two lateral wings forming a U.

Construction of this administrative center began in 1929 following government land allocation in the port area and was completed in 1936. The project emerged from the growing need to centralize and modernize railway management operations.

The building expresses Argentina's commitment to railway modernization during the early 20th century and reflects the era's confidence in technological progress. Its straightforward design and organized layout reveal the administrative values of that period.

The building houses the Cámara Nacional de Apelaciones en lo Penal Económico, so it is a working court and not open for tours. Access is from the Avenida de los Inmigrantes boulevard, up a granite stairway to the main entrance. The gardens around the block can be seen from the street; the court chambers are not visitable.

The entrance hall features expressive decorative panels created by artist Rodolfo Franco that showcase the artistic vision of the era. These artworks remain an often-overlooked detail revealing the connection between administration and culture during this period.