Interior

On each side on the entry of the cathedral is a stone crucifix and a holy water font. High on the left side there is a brick from the Lateran Basilica, and on the right side a jubilee 2000 medal. The crypt is accessed through the door in the right wall of the vestibule, then up to the organ matroneum and finally down through the door on the left wall. In the crypt, there is an oratory, as well as Catechism rooms and the office of the Caritas charity.[12]

There are benches in the main aisle and confessionals in the side aisles. The confessionals contained benches until the closure of the church in 1938. After its reconstruction, the left side was reserved for women, and the right for men.[12] Both side aisles are separated from the main aisle by pillar files, consisting of four columns and two half columns. The columns and the roof are painted in white, and the walls in cream. The floor is constructed from light and dark grey marble slabs in a chequered pattern.[12]

Most of the 8.5-metre (28 ft) high stained glass windows have abstract designs. Those in front feature crests of Apostolic Nuncios John Cardinal Burkowski and Francesco Cardinal Colasuonno. The windows in the transept are slightly larger and have a more complex design. The window in the right lateral arm depicts Saint Peter and Saint Andrew, who symbolise the Western and Eastern branches of the Catholic Church. On the window on the opposite side of the left lateral arm is depicted Pope John Paul II, who is gazing at the Marian apparition of Fátima. In the nave, under the windows, are fourteen reliefs depicting the Stations of the Cross.[12]

The entry to the vestry is located at the end of the right side aisle next to the choir; at the end of the left side aisle is the Chapel for Mercy of God. The tabernacle is situated on the chapel’s altar. The church’s main altar is faced with a dark green marble, and houses relics of Saints Andrew, Zenon of Verona, Gregory of Nyssa, Gregory of Nazianzus, Cosmas, Damian and Anastasia, as well as the Virgin Mary’s scarf and a donation from the Diocese of Verona. The ambo – a projection coming out from the soleas – is on the right side of the altar, and is faced with the same marble. Behind the altar, on the wall of the apse, there is a nine-metre high stone crucifix with a three-metre high figure of Christ. Plaster figures depicting the Virgin Mary and John the Baptist by architect Svyatoslav Sakhlebin are located on the left and the right sides (respectively) of the corbels. On the opposite side of the altar and above the cathedral’s vestibule is the organ loft, which had originally room for 50 choristers; a large part of it is now occupied by the organ.[12]