The beautiful church at Mission Nuestra Señora de la Purisima Concepción de Acuña looks much like it did in 1755 when it was first dedicated. Interior renovations in 2010 returned the church’s interior walls to the rich colors of 255 years earlier. The church’s exterior was originally decorated with geometric designs painted on the façade and iron crosses and weather vanes were placed atop the two towers. The exterior paintings have faded, but inside you can still see original frescos in some of the rooms. The church stands as the oldest unrestored stone church in the U.S.