Correo Central de Rosario, Postal palace in Rosario, Argentina.

Correo Central de Rosario is a postal building in Rosario featuring French-inspired classical architecture with a pink Paris stone facade. The structure contains triple-height halls and is topped with a slate mansard roof, creating an imposing presence in the city center.

The first post office on the site, designed by Ángel Guido, began in 1929 where the Rosario police headquarters had stood. Work halted after the September 1930 coup, and the metal skeleton, known as the Torre de Guido, was demolished in 1933-1934. A new French academicist design by the Ministry of Public Works was built by Arroyo y Spiller from 1934 and inaugurated in 1938.

The building's name, Correo Central, is how Rosario residents refer to the national postal service's main office. Since 16 November 1939 a specialised public library has operated alongside it. Inside, a museum displays scales, old stamps and postal objects once used on the premises.

The building continues to operate as a postal facility with government offices located in the Plaza 25 de Mayo district. Visitors can explore the main halls and architecture during business hours, with the main entrance easily accessible from the plaza.

Ángel Guido designed the first building as an 80-metre tower, but after the 1930 coup the works stopped and the metal skeleton was demolished between August 1933 and May 1934. Two oral explanations circulate: that the Church did not want a building taller than the Cathedral, or that the Rosario post office could not exceed the one in Buenos Aires. The story is told in the 2010 documentary "La Torre de Guido", premiered at the Cine El Cairo.