The church is constructed in the Gothic Revival. The college chapel, dating from 1907, was designed in the traditional shape of a Latin cross. In 1929, the chapel was enlarged to hold the large congregation of the cathedral, changing the proportions of the traditional cross configuration. Prior to the expansion, the bell tower was located at the northwest corner of the structure. Today, the tower occupies a site on the north faḉade. The interior of the three-story bell tower is very small with a ladder and openings that permit only a person of small stature to enter. Cornerstones, plaques, and stained glass windows from the earlier locations of the cathedral are incorporated around the cathedral close.