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Trinity Dome Collection

August 26-27, 2017

National collection for the Trinity Dome

to complete the Basilica of the National Shrine of the Immaculate Conception in Washington, DC,

before its 100th anniversary. 

Basilica of the National Shrine of the Immaculate Conception

Parishes throughout the archdiocese will participate in a national collection to complete the final major project, the Trinity Dome, on the Basilica of the National Shrine of the Immaculate Conception in Washington, DC before its 100th anniversary in 2020. The National Shrine has been a century in the making since the laying of its foundation stone in 1920.  Also known as America’s Catholic Church, the National Shrine is the largest church in the United States and is a beacon of our faith to the nearly 1 million who visit it each year and to the millions more who visit and work in our nation’s capital.  

The Trinity Dome is the central and largest dome of the National Shrine. This “Crowning Jewel” will be adorned in mosaic according to the original iconographic scheme of the Great Upper Church and will depict the Most Holy Trinity, the Blessed Virgin Mary as the Immaculate Conception, and a procession of saints who have an association with the United States and the National Shrine. The procession of saints includes, among others, St. Juan Diego (the first canonized male Native American), St. Kateri Tekakwitha (the first canonized female Native American), St. Teresa of Calcutta (an honorary American citizen), St. Francis Cabrini, M.S.C. (the first U.S. citizen to be canonized), St. John Paul II (the first pope to visit the National Shrine), and St. Junípero Serra (declared a saint by Pope Francis at the National Shrine in 2015 for the first canonization ever to take place on American soil). The Nicene Creed will encircle the base of the dome, while the dome’s four pendentives will feature the four Evangelists: Matthew, Mark, Luke and John.


During his visit to the Basilica of the National Shrine of the Immaculate Conception on September 23, 2015, Pope Francis blessed the preliminary segment of mosaic created for the Trinity Dome containing the words of the beginning and end of the Nicene Creed: “I believe in one God.” “Amen.”


More information on this project can be found at and/or Thank you in advance for your support of this initiative through the second collection on August 26th & 27th, 2017.  Please make checks payable to the Archdiocese of Chicago with a notation that the check is intended for Trinity Dome.  You can also make a gift via credit card online by clicking here.

Trinity Dome at the Basilica of the National Shrine of the Immaculate Conception
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