Buenos Aires Central Post Office, Beaux-Arts post office building in San Nicolás, Argentina

Buenos Aires Central Post Office is a Beaux-Arts building in San Nicolás featuring a grand entrance, central domed hall, and ornately decorated interior spaces across multiple floors. Its French Neoclassical design includes detailed architectural elements distributed throughout the structure's different levels.

The post office director Ramón Cárcano proposed a dedicated building in 1888, and President Miguel Juárez Celman approved Norbert Maillart's design, begun in 1889 on land reclaimed from the Río de la Plata. Works halted in 1890, and after a 1908 redesign Maillart left in 1911; Jacques Spolsky took over. President Marcelo T. de Alvear inaugurated it on September 28, 1928.

Since 2015 the building has housed the Centro Cultural Kirchner, renamed Palacio Libertad, Centro Cultural Domingo Faustino Sarmiento in October 2024. Its main entrance leads into the Hall of Mailboxes, and the former public service hall is lit by skylights at the height of the fourth floor. The original public rooms, sculptures, paintings and stained-glass enclosures were kept during the conversion.

The building is located in San Nicolás and is easily accessible by public transportation, with exhibition spaces spread across multiple levels for visitors to explore. Plan extra time to see the various exhibitions and events happening across different spaces throughout the venue.

The building stands on 2,882 reinforced concrete piles, each about 10 m long, driven into land reclaimed from the Río de la Plata and joined by a slab capping their heads. The change from masonry to a metal skeleton and reinforced-concrete floors came after Jacques Spolsky took over the project from Norbert Maillart in 1911.