In the center of the main altar is the Tabernacle, where Jesus is truly present in the form of the Holy Eucharist. The sanctuary light hanging from the ceiling tells everyone that Jesus is present in the Tabernacle. Because we recognize Jesus as our Lord, we genuflect or bow as a sign of our honor of Him and our humility before Him.

To the right of the altar is the priest's chair. There sits the presider as representative of the bishop.  He is responsible for drawing all the prayers and actions of the people together in Christ.

In 1881 the first organ was installed in St. Mark's Church. In 1926 a new pipe organ was purchased and installed. The third classical instrument organ was designed by Eric A. Fiss in 1974 and was considered one of the best in the Archdiocese. It contained 1,128 pipes and was severely damaged in the 2005 fire. The current organ is a Rodgers 4-manual 1038 organ. It is an electronic hybrid with five ranks of beautiful real pipes and 148 equivalent electronic ranks. The new organ can be played from a keyboard on the musicians' platform downstairs or from the choir loft.

Stained Glass Windows

The original windows were only clear glass. After 15 years the parish installed "milk-glass" windows - which you will find in most area churches of that era.  The only two milk-glass windows remaining in the church are the two small windows on either side of the main altar. These two windows were destroyed in the August 24, 2005 fire but have been beautifully restored.

Before World War I, Emperor Franz Josef of Austria commissioned a set of art-style, stained glass windows for a family chapel. After World War I, Fr. Savs located the windows that were intended for the chapel that was never built, and because Germany was cash poor after the war, he was able to purchase them at a price of $250 per window. Because there were only 10 in the set, he located the original maker and had them make three more windows of the same design, one of which is a memorial window for men from St. Mark's who dies during World War I.

Stained Glass Windows on the North (right) side of the church starting at the main entrance and going toward the Altar:

• St. Anthony's Bread
• Holy Family (Boy, Christ)
• Resurrection
• The Prodigal Son
• Blessing Children
• Guardian Angel
• Pentecost

• World War I Memorial
• Sacred Heart appears to Margaret Mary Alacoque (The apparition of the Sacred Heart)
• St. Dominic receiving the Rosary
• Mary Magdalene anoints Jesus's feet
• The Nativity
• The Assumption

Station I starts on the South (left) side of the altar if you are facing the altar. Follow the stations to the back of the church toward the main entrance to Station VII. Then cross the back of the church to Station VIII and head towards the altar to finish with Station XIV.

Saint Stephen, wearing a dalmatic (robe with wide sleeves), was one of the first ordained deacons of the Church. He was also the first Christian martyr and is holding a martyr's palm frond, representing the victory of spirit over flesh, and the stones used in his martyrdom.

Joseph was the husband of our Blessed Mother Mary, and the foster father of Jesus, whom he is holding in one hand. In the other hand, he holds a flowering staff which tradition tells was the miraculous sign that he was to be the husband of Mary. He was a descendant of David, and when he went for the census, he took his pregnant wife Mary with him. Jesus was then born in David's city of Bethlehem.

Aloysius de Gonzaga (March 9, 1568 – June 21, 1591) is the patron saint of youth. He was an Italian aristocrat and the firstborn of eight children to Ferrante de Gonzaga, Marquis of Castiglione, and Dona Marta Tana di Santena. He loved Jesus and he dedicated his short life to the Lord and to others. He renounced any right to his inheritance and status to become a Jesuit. He suffered many bodily ailments including disease of the kidneys, skin disease, chronic headaches, and insomnia. While still a student at the Roman College, he died as a result of caring for the victims of a serious epidemic preparing them as best he could to receive the Sacraments. It is said that he had a vision in which the Archangel Gabriel told him that he would die within a year. He died on the Octave of the feast of Corpus Christi. He was beatified in 1605 and canonized in 1726.

John the Baptist wore garments made of camel's hair and preached repentance. The lamb at his feet reminds us that he pointed to Jesus and told his disciples Jesus was the Lamb of God.

Mark the Evangelist wrote the second Gospel, so he holds a pen and a book in his hand. The lion at his feet is his symbol, for his Gospel begins by describing John the Baptist, who was like a lion roaring in the desert.

George was a soldier in the imperial army of Rome. He was martyred in 303 AD in Lydda, Palestine. He was the patron saint of the Knights of St. George who, in the early years of this church, were dedicated to the defense of the Catholic faith and donated this statue.

Barbara was a martyr who died to maintain her virginity. The three windows in the tower indicate her love of the Trinity. She is invoked for help against lightning and fire and is regarded as the patroness of gunners, hence the cannonballs.

Mary, the mother of Jesus has flowers around her heart indicating the sweetness of the love she has for Jesus and us. The wand is a sign that she is Queen of Heaven.

Mary Magdalene loved Jesus greatly. Jesus healed her of seven evil spirits. The vase in her hand is in remembrance of her washing Jesus' feet.