The museum is dedicated to the memory of General Don José de San Martín who liberated Argentina, Chile and Peru from Spanish rule in the 19th century. The General, fleeing Paris and the revolutionary fighting caused by the fall of Louis Philippe, was on his way to England, where he intended to settle. But when he arrived in Boulogne-sur-mer, he liked it so much he stayed. He called it a "charming little cobbled town" and stayed here with his family until the day he died, in 1850. The government of Argentina bought his house in 1926 and turned it into a museum, a true place of pilgrimage for many Argentinians.