In the 19th century, when Vilnius was part of the Russian Empire, several Byzantine Revival architectural elements were added to the church, but it nevertheless retained its essentially Baroque form. Indeed, the added Orthodox frescoes, Iconostasis and dome enhanced its magnificence, as did the addition of deep blue and green interior decor. Unusual in an Orthodox church are the Scagliola (simulated marble) sculptures. A new reliquary was added in 1853.
