San Martín barracks (Spanish: Cuartel San Martín), originally Junín barracks (Spanish: Cuartel Junín), was a military installation inaugurated in 1921 to house the Mounted Grenadiers Regiment of the Argentine delegation that visited the country for the Centennial of the Independence of Peru.

Located the 13th block of the Avenida del Ejército,[2] it was subsequently closed and auctioned in 2009 and demolished a year later.

The barracks were inaugurated by Augusto B. Leguía in 1921, alongside the adjacent avenue, as part of the projects carried out for the Centennial of the Independence of Peru.

[3] Named after José de San Martín (and originally after the battle of Junín prior to July 1921),[4][5] the barracks were built to house the Mounted Grenadiers Regiment of the Argentine delegation that was visiting the country in its anniversary,[6][7][8] with construction works beginning in 1918.

[4][15] A large part of the terrain was acquired by the GMV-Urbi Consortium,[16] which plans to build a commercial venue in the barracks' former premises.