The Cathedral of the Immaculate Conception is the seat of the Catholic Diocese of Springfield in Illinois.

[2] The cathedral was built and consecrated under the leadership of James Aloysius Griffin, fourth bishop of the diocese.

The cathedral itself is consecrated to the doctrine of the Immaculate Conception of the Virgin Mary, and is under the patronage of the Blessed Mother.

When the seat of the diocese moved to Springfield in 1923, it needed a larger structure to serve as cathedral.

[2] Media related to Cathedral of the Immaculate Conception (Springfield, Illinois) at Wikimedia Commons