WASHINGTON — Monsignor Walter Rossi, Rector of the National Shrine, and others, discuss the basilica’s 96-year history and the structural challenges that the mosaic completion of the Trinity Dome presents. A project that is a Century in the Making will be completed in late 2017 in time for the centennial celebration of the laying the foundational stone in 1920. The final mosaic, consisting of over 14 million pieces of venetian glass, is considered be the “crowning jewel” of what is known as America’s Catholic Church.

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