The St. Louis Cathedral Basilica is one of the best examples of Romanesque architecture on the outside and Byzantine architecture on the inside west of the Mississippi. Quoting Wikipedia: "In 1912, installation of mosaics in the interior began. Completed in 1988, it contains 41.5 million glass tesserae pieces applying over 7,000 colors. Covering 83,000 square feet (8,000 m²), it is one of the largest mosaic collections in the world, and was created by 20 different artists including Hildreth…
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