 The nave measures 98 feet ( 30 m ) between the entrance and the communion rail . An aisle passes down its center ; narrower aisles follow the north and south walls . Two rows of seven circular columns run along the nave . The columns are made of wood , plastered to conceal the material , and decorated with Corinthian capitals . The rib @-@ vaulted ceiling rises 30 feet ( 9 @.@ 1 m ) above the floor . Fourteen stained @-@ glass windows , depicting scenes from the life of Christ , occupy the nave 's walls . The 13 @.@ 5 @-@ by @-@ 5 @-@ foot ( 4 @.@ 1 m × 1 @.@ 5 m ) windows were produced by the Muenich Art Studio of Chicago . Between the windows are sculpted stations of the cross . In three <unk> above columns on each side are <unk> paintings . 
