Cathedral of the Holy Trinity - the only Orthodox church in Buenos Aires. By the end of the 19th century lived in the city a large number of Orthodox Arabs, Romanians, Greeks and Slavs, who appealed to the Russian Emperor Alexander III asking for the construction of the temple. After a few years of parishioners on the national composition of the steel only Russian, as Arabs and Greeks built their congregations.

Initially, the temple took two rooms in a small house in the center of the city. Later there was built a separate Orthodox church designed by Argentine architect Alejandro Christophersen. The cathedral was designed in the style of Russian churches of the 17th century.

The building is two-storey: the first floor of the school is located, and the second - the church. Painting ceilings, columns, domes, arches and all the ornament was made by the artist from Italy - Matteo Casella. The temple has two side chapel - Mary Magdalene and St. Nicholas. The church is located close to the icon-painting "The Last Supper", "The Holy Trinity", "Transfiguration of Christ", "Universal saints" and others. A distinctive feature of the temple is a porcelain iconostasis and relics donated by the Athos elders.

In the early 20th century when the church was opened shop, a free reading room, an amateur choir, a shelter for the needy, cultural and educational circle. At present, the Cathedral of the Holy Trinity open school, conducted the service on Saturdays, Sundays and holidays. Free entrance to the temple for the Orthodox and the locals and tourists.