The Diocese of Orange in California has officially finished its renovation of Christ Cathedral, a onetime-Protestant megachurch, after more than a decade of work that brings to completion what the diocese calls a “major center of Catholic worship.”

The cathedral has been fully operational for five years and currently hosts nearly a dozen Masses in multiple languages every weekend, serving upward of 12,000 Catholics.

The diocese in 2011 purchased the massive glass-faced building, previously the center of the Presbyterian Shepherd’s Grove congregation, for $57.5 million. The diocese had long been planning to build a new cathedral in nearby Santa Ana before the building, then known as the Crystal Cathedral, went up for auction.

The sun sets through the distinctive quatrefoils of Christ Cathedral as construction and renovation continue inside the space formerly known as the Crystal Cathedral on Feb. 7, 2019. (Challenge Roddie/Diocese of Orange via CNA)

Shortly after its purchase, the diocese launched a total renovation project to “redesign the main building to comply [with] Catholic liturgical tradition and needs.” The diocese ultimately dedicated the cathedral in 2019 after a seven-year, $77-million renovation process.

The diocese announced earlier this month that it had finally completed the renovation of the building, heralding a “milestone moment in the history of the diocese” that has established the cathedral as “a major center of Catholic worship for the West Coast.”

The diocese said it had finished work on the building’s St. Callistus Chapel and Crypts, which finalized “all the major components of the original vision to transform the Crystal Cathedral into Christ Cathedral.” A dedication Mass of the chapel and crypts was held on Monday.

“It was a long path to reach this moment,” Orange Bishop Kevin Vann said in the release, “but the Lord gets us to where we need to be.”

The interior of Christ Cathedral is pictured at night on Aug. 21, 2024. The building formerly known as the Crystal Cathedral was extensively renovated to accommodate Catholic worship needs and traditions. (Kaylee Toole/Diocese of Orange via CNA)

“I hope all feel a great sense of gratitude, and I’m particularly thankful for everybody who participated in this, from beginning to end,” the bishop said.

The full project included “renovating the cathedral, arboretum, and Tower of Hope; expanding the Cathedral Memorial Gardens cemetery; building the Our Lady of La Vang Shrine and Marian Gardens; and restoring the Hazel Wright Organ,” the diocese said.

Crews carefully cut away at the box holding Christ Cathedral’s Our Lady of La Vang statue on June 2, 2021. It took three days to install the Italian marble statue, which weighs an estimated 16,000 pounds and, together with a cloud and base, is 18 feet tall. (Steven Georges/Diocese of Orange via CNA)

The Hazel Wright Organ, the cathedral says on its website, is “the fifth-largest pipe organ in the world, with more than 17,000 pipes, more than 300 stops, and nearly 300 ranks.”

It was built in 1982 and is “arguably the most widely heard organ in the world,” owing to the widely-viewed weekly “Hour of Power” television show that had for years been broadcast out of the building by the Shepherd’s Grove congregation.

The Hazel Wright Organ was dedicated and first played in 1982, quickly becoming a highlight of Dr. Robert Schuller’s “Hour of Power” broadcasts. When the Diocese of Orange acquired Schuller’s Crystal Cathedral campus in 2012, the organ was in disrepair and in need of a full restoration — a process that took nearly a decade and was fully completed in 2022. (Greg O'Loughlin/Diocese of Orange via CNA)

The St. Callistus chapel, meanwhile, features “an elaborate tabernacle inspired by 12-century masterpieces of medieval goldsmithing,” the diocese said. Music for the chapel will be provided by a smaller pipe organ. A relic of the third-century St. Callistus I will also reside in the chapel’s reliquary.

The chapel also features a tribute to Robert Schuller, the founder of the Crystal Cathedral, as well as his wife, Arvella. Both were “key supporters in the sale of their iconic glass church and its environs to the Diocese of Orange.”

Crews carefully lower a 1,325-pound Our Lady Queen of Heaven statue made of Italian marble into place for Christ Cathedral’s Marian Gardens on June 11, 2024. The Marian Gardens, which opened in May 2024, are a walk-through experience that provides peaceful prayer, reflection and education about the life of the Virgin Mary and Jesus. (Bradley Zint/Diocese of Orange via CNA)

The cathedral’s expansive campus includes multiple buildings, including a diocesan pastoral center, a cultural center, a gift shop, and several other structures. EWTN, the parent company of CNA, also has a television studio on the campus.

The Orange Diocese includes 1.3 million Catholics, 58 parishes, five Catholic centers, and 36 schools. Every weekend, Christ Cathedral offers a total of 11 Masses in four languages — English, Spanish, Vietnamese, and Chinese.