The present Holy Family Cathedral in the city of Orange is a large parish church (Orange County has been separate from the Archdiocese of Los Angeles for only about 25 years). There are over 1 million people who claim to be Catholic in Orange County, and the diocese needed a larger cathedral.
I think there is a certain irony involved with this purchase, in that the Roman Catholic church is taking over an edifice constructed by a Calvinist (Robert Schuller is an ordained minister in the Reformed Church in America, one of the Dutch Calvinist sects). I’ve visited St. Pierre in Geneva, which was standing in the 16th Century when John Calvin turned into a protestant temple. Now we have the grandest temple of the Calvinist movement being transformed into a Roman Catholic cathedral. St. Francis de Sales would be proud.
If Catholics believe the Crystal Cathedral is a Calvinist temple, I've got some additional properties that I'd like to sell them!
RCA has Calvinist roots, but Schuller, theologically, is not a Calvinist.