Catholic church was the main element formed over the XVI - XVIII centuries ensemble Jesuit College - Catholic stronghold of the Jesuits. In planning the structure of the ensemble has been dominated by the Jesuit church, which was a three-nave two-tower building with two chapels (Trinity and Felitsianovskoy) on both sides. The church itself was pushed into the depth behind the building, so before it was formed small kurdoner (front yard). In deep semicircular niches carved wooden towers placed sculptures of Saints Peter and Paul, and a pediment decorated with a figure of Mary with the baby. The towers were installed four bells, each of which had its name. And magnificently ornate church was painted inside: arches decorated with ornamental painting, painted walls subject compositions executed in fresco technique artist Kazimir Antoshevsky.