St. Mary's Church in Lillehammer is a Catholic church that offers a number of sacraments, including baptism, confirmation, communion and marriage. The church emphasizes religious education and catechesis, and has an active parish life with a focus on engaging members in social issues. This includes working for peaceful coexistence in the local community.
To support parishioners of different ages, St. Mary's Church organizes courses and training. The church also has a photo and activity gallery that promotes parish life, as well as Polish language support for those who need it. The local administration of the church is carried out through an active parish council and a financial council, which helps to ensure the good operation and development of the parish.