Mosaics
In 1912, installation of mosaics in the interior began. Completed in 1988, the mosaics collectively contain 41.5 million glass tesserae pieces in more than 7,000 colors. Covering 83,000 square feet (7,700 m2), it is one of the largest mosaic collections in the world.
While the mosaics in the side chapels and sanctuary walls were designed and installed by Tiffany Studios, the mosaics in the main cathedral areas were designed by August Oetken. Installation of the mosaics was completed by dozens of artisans, including Hildreth Meiere, Ravenna Mosaic, Inc,. and Emil Frei, Inc., of St. Louis. The narthex of the church depicts the life of King Louis IX of France, namesake of the city and church, the rear dome includes mosaics of significant archdiocesan events, while the main dome by Jan Henryk de Rosen depicts Biblical scenes from both the Old Testament and New Testament.
Read more about this topic: Cathedral Basilica Of Saint Louis