I didn't know about The San Martin's Historical Museum and to be honest I was tired of him after seeing so many squares, statues, and streets with his name :)
After a short walking at San Martin avenue (you see?) I saw the Alameda, a promenade with some nice trees and statues and close by was the San Martin’s library and museum. I said "let's give him one last chance!" and I went inside...
This was supposed to be his house but he never lived here. The museum is small but holds some interesting information about the life of the legendary liberator against Spain. A lot of artifacts, portraits, guns and other personal items and some signs with info (in Spanish and english) about his life
Museo Histórico Gral. San Martín;
Museo Histórico de los Gobernadores
In memory of one of the great liberators in the revolutions against Spanish rule in Argentina, Chile, and Peru, gen. José de San Martín, this museum is dedicated to the general history of Mendoza and its people and the revolution in which San Martín fought his way westward across the Andes (1817) and took Santiago Chile. He finally routed the Spanish royalist forces at the Battle of Maipú in 1818.