When still a cardinal, the new pope led discussions on key issues facing the church during which “every voice had equal value,” whether an archbishop or an unordained believer.

Pope Leo XIV celebrated his first Mass in the Sistine Chapel where he was elected less than 24 hours earlier, warning of the dangers caused by a lack of faith and hoping the Catholic Church could be a beacon lighting the world's "dark nights".

“The former St. Mary of the Assumption building is unique for its connection to the youth of the first American pope, but it is sadly not unique as an example of an empty former house of worship,” said Kendra Parzen, advocacy manager for the preservation group Landmarks Illinois.