The interior of the Cathedral has gone through three phases. the first interior (1909-1918) was quite simple with white walls and green columns.
The second interior was created under the leadership of Joseph S. Glass, who became the second Bishop of Salt Lake City in 1915. A man of strong artistic sensibility, Bishop Glass undertook a thorough reconstruction of the art and furnishings, inspired by the Spanish gothic art of the late Middle Ages. The colorful murals in the sanctuary and transepts were added at that time, as was the ornate and dramatic coloration evident throughout the building. This interior was completed before Christmas, 1918.
Under the leadership of William K. Weigand, seventh Bishop of Salt Lake City (1980-1994), the restoration of the second interior, which had suffered the effects of dirt and pollution, was planned and executed. This included the renovation of the liturgical elements of the Cathedral to bring them into conformity with he liturgical reforms that followed Vatican Council II. It was completed in 1993.
