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4 - Co-Cathedral of the Sacred Heart (Houston, Texas)
One of the newest cathedrals to serve Catholic communities of the U.S., the Co-Cathedral of the Sacred Heart was completed in 2008. The parish itself dates back to 1896, and the previous version of the Co-Cathedral stood for over 90 years. As a Co-Cathedral, Sacred Heart shares the seat with St. Mary's Cathedral Basilica in Galveston. The two churches serve the Archdiocese of Galveston–Houston.

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