When the basilica was inaugurated on May 22, 2005, festivities included concerts, receptions, a banquet, a lecture, and special votive masses that honored the Dominican priests, brothers and sisters, the Brothers of the Sacred Heart, the Sisters of Charity and the Daughters of Wisdom for their contributions to the life and development of the parish.
A memorial coin commemorates the elevation of the Saints Peter and Paul Church in Lewiston to a basilica. One side of the coin reads, "Elevated October 4, 2004 Inaugurated May 22, 2005."