Named in honor of Our Lady of the Immaculate Conception and Juan de Acuña, the beautiful stone church known as Mission Concepción was originally founded in 1716, and transferred to the San Antonio River area in 1731. 

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The church is considered by many historians as the oldest unrestored church in the United States.  It is a National Historic Landmark, a designated UNESCO World Heritage Site, and is home to an active Catholic community in San Antonio.