Cathedral Basilica of the Immaculate Conception is the mother church for a rapidly growing religious community of nearly 500,000 Catholics spread across 144 parishes and missions in northern Colorado. The cathedral parish, with over 700 households, offers a spiritual sanctuary to its members. The church is renowned for its stunning collection of 75 windows, considered among the most beautiful in the world, representing every religion in America. more than any other church. Additionally, the Cathedral Basilica of the Immaculate Conception provides a range of activities for its members, including Bible studies, sports clubs, pilgrimages, and social events on Sunday evenings. The cornerstone was laid in 1906, and on July 26, 1908, Father Mac was appointed rector of the Cathedral. The cathedral choir sings modern hymns, including refrain/antiphon and contemporary Catholic classical songs, as part of the liturgy ministries available to the congregation.