SIOUX FALLS, S.D. (AP) — The public has a chance this Christmas season to get a glimpse of a $16 million restoration project under way at St. Joseph Cathedral in Sioux Falls.

The main part of the cathedral has been closed since June 2009, but it will be used for Christmas mass and some musical programs this month.

The entire project won't be completed until July. It involves installing Italian marble, restoring paintings, installing a new lighting and sound system, and adding a climate control system to protect the structure.

Bishop Paul Swain says the 90-year-old building is the home church for eastern South Dakota and the "mother of the Catholic diocese."