El abuelo inmortal, Bronze and granite monument in Palermo Chico, Buenos Aires, Argentina

El abuelo inmortal is a bronze and granite monument in Palermo Chico depicting General José de San Martín seated in a domestic moment with his two granddaughters. The sculpture features bronze figures mounted on a substantial granite base that incorporates earth from neighboring countries.

The monument was commissioned by Law 13.661, passed on 24 October 1949, which also declared 1950 the "Year of the Liberator General San Martín". It was inaugurated in 1951 on Plaza Grand Bourg, named in 1944 after the French town where San Martín spent his last 15 years. The work was the first monument to show him not as a soldier but in retirement.

The monument was the first to show San Martín not as a soldier but in the last years of his life, tending his dahlias or walking along the Seine. Three bronze bas-reliefs on the granite base repeat this domestic theme: cleaning his weapons, on the banks of the Seine, and cultivating his dahlias.

The monument is located in Palermo Chico near the Instituto Sanmartiniano and is easy to visit on foot. Visitors can view the sculpture year-round in the open air and explore the surrounding neighborhood.

The face derives from a daguerreotype taken in Paris two years before San Martín's death, now kept at the Museo Histórico Nacional. The hands were modelled on those of the sculptor's friend, musician Pedro Ubertone, and the granddaughters on two neighbourhood girls, Susana de Tezanos Pintos and Lucía Arocena.