The church of Sant'Ignazio dominates Piazza Vittoria with its characteristic onion-shaped bell towers, typical of central European churches.

Commissioned by the Jesuit Fathers, the church was built starting in 1654 and was not completed until 1767, the year it was consecrated by the first Archbishop of Gorizia, Carlo Michele d'Attems. On the left side of the building, where the INPS building now stands, was originally the Jesuit College, which was transformed into barracks following the suppression of Joseph II and finally demolished after the First World War.

In addition to the large onions that top the two bell towers, on the façade you can admire the statues of Saint Ignatius (in the centre), Saint John the Baptist and Saint Joseph (patron saint of the County of Gorizia) placed in the niches above the three entrance portals.

The typically Baroque interior is dominated by the high altar, the work of Pasquale Lazzarini (1667-1731), with statues of the four evangelists and the Virgin and Child, as well as those of Saint Stanislaus Kostka, Saint Francis Borgia, Saint Francis Xavier, and Saint Aloysius Gonzaga. The fresco in the background, depicting the Glory of Saint Ignatius, conceived in the style of architectural illusionism, is the work of Christoph Tausch, a painter and architect originally from Innsbruck who also designed the façade. On each side of the single nave are three chapels with beautiful polychrome marble altars, commissioned by some of the city's most important noble families, such as Cobenzl, Della Torre, and Strassoldo. Also noteworthy is the pulpit of white Carrara and green Sicilian marble, created in 1750 and attributed to Pietro Baratta.