This church is built in basilica form, having a semicircular domed apse at one end, with a center aisle and two side aisles. Ten granite columns support vaults and arches indicative of the Gothic style. The interior dimensions are 66 feet wide by 130 feet long, and 67 feet to the ceiling.
The baptismal font stands at the door of the church to remind those entering that every time they come to the Eucharist they come through Baptism. They dip their hand in the water and mark themselves anew with the sign in which they were baptized – the sign of the cross.
The central part of the church extending from the entrance hall, or narthex, to the apse is called the nave (from the Latin word for "boat") and provides the assembly space for God's people at prayer. In the back right corner of the nave is the door leading to the reconciliation room, designed for the celebration of the Sacrament of Reconciliation, also called Penance or Confession, which developed from the need to reconcile Christians who had separated themselves from the life of grace and from the community by their sins. At the back center of the nave and on the right hand side near the front are some of the old confessionals, in use until the reconciliation room was built in 1992.
Around the walls of the nave are the 14 images known as the "Way of the Cross", depicting events in the last journey of Jesus from the Praetorium, where he was condemned to death, to his crucifixion and entombment. As a personal devotion, the faithful walk from station to station, meditating on each event of the Passion.
The statues of the Blessed Mother, St. Joseph, and St. Anthony of Padua serve as reminders to Catholics of the communion of saints, calling to mind our union with heroic Christians of other times and places who act as intercessors for blessings. The Cathedral's congregation has historically contained many Italians, with whom St. Anthony is a particular favorite.