The Orthodox Church of St. Sergius in Paris is called the Russian pearl. Among the historic elements, attention is drawn to a carved wooden porch and a richly decorated interior made in the Russian Neo-Gothic style. The church also has annexes with a library with a collection of Russian books.
Originally, it housed a Protestant parish temple, which was abandoned in 1918. This 19th-century building was captured by the Orthodox Church on the feast of St. Sergius. Hence the call of the church. Before the war, it hosted many German emigrants who, after the revolution of 1917, gave way to Russian refugees who came to Paris.
For the decoration of the interior of the church of St. Sergius was answered by the Russian painter Dimitri Semyonovich Stelletsky. The library houses over 35,000 volumes of Russian literature translated into many languages. It also houses the Institute of Orthodox Theology of St. Sergius, which is the oldest Orthodox university in the west.