Official diplomatic relations between Russia and Argentina were established in October 1885. Since then, our compatriots began to gradually move to this distant South American country in search of a better life. Over time, a small Russian-speaking community formed in Buenos Aires. Life abroad was relatively successful for them, but many lacked a spiritual center. In the 1890s, it was decided to build an Orthodox church.

Funds for the construction were raised not only in Argentina. Charity evenings were held in Russia. Nicholas II donated 5000 rubles for the construction of the church. Financial support was also provided by the dowager empress Maria Feodorovna and John of Kronstadt. The project of the Holy Trinity Church was developed by member of the Imperial Academy of Arts Mikhail Preobrazhensky, and the construction was overseen by Argentine architect Alejandro Christophersen. The church became not only a place for worship. In the early 20th century, a free reading room, a shelter for the needy, a folk choir, and a cultural and educational circle were opened here. The local parish actively raised funds for impoverished Russian settlers, helping them with employment and housing.

After 1917, everything changed. The October Revolution affected even this distant place. During the Civil War, diplomatic relations with Argentina were severed. The Soviet government disliked that Argentina accepted hundreds of refugees from Russia, many of whom were White Guards. In 1967, in memory of the 50th anniversary of the tragic events in Russia, a memorial plaque was installed on the church with the inscription: “To the bright memory of Emperor Nicholas II the Martyr, leaders and warriors of the volunteer White Armies for the honor of the Motherland, for Great, United, Indivisible Russia, who raised the sword against Bolshevik power. ROVS, Buenos Aires. 1967.”

Fortunately, today the friendship between our countries has been renewed, and in 1998, on the centenary of the church's founding, a large Russian-Argentine delegation arrived here.