Mission Nuestra Señora de la Purísima Concepción de Acuña (Mission Concepción) is another beauty, and it was our fourth mission to visit on this two-day trip.
Mission Concepción is the oldest, best-preserved stone church in the United States. Its overall design is in the shape of a crucifix, and the vaulted roof has a dome. Two identical bell towers mark the entrance. On the day we visited, seismologists were examining the church's walls for stability and/or movement; hence, you see the Genie (above) sort of marring my photo! The walls of limestone are four feet thick, but the church retains the highest level of original colonial-era materials of any of the mission churches and is in very good condition overall.
This handsome stone church took about 15 years to build, and was dedicated in 1755. It appears very much today as it did over two centuries ago. Due to the fact that it was built directly on bedrock, it never lost its roof, or its integrity. It remains the least restored of the colonial structures within the Park.
Very little is known about the Franciscan friars and their role in the establishment of 18th century San Antonio. The surviving records fall short of revealing a true narrative of life in the Missions, either for the indigenous people that provided the labor to build them, or the Spaniards who brought their government and religion with them. Or, more especially ...
... how the Franciscans could build a church that aligns precisely every year at 6:30pm on August 15th -- the Feast of the Assumption of Mary -- with a rare double illumination. As the late summer sun arcs across the horizon, rays of light will pass through two windows on the mission’s western wall, one illuminating the face of Mary, as she is depicted in the painting of the Immaculate Conception that hangs behind the altar on the sanctuary wall (above). At the same moment the face of Mary is illuminated, a second ray of light will illuminate the sanctuary floor at its center below the dome. As Jimmy and I entered the church, a docent was talking to two tourists about this double solar illumination. We sat down in a pew and listened, and his audience grew. He spoke so eloquently. I discovered the photo below posted on the church bulletin board. Jimmy and I found the whole subject fascinating.
Every year, hundreds of people of all faiths flock to witness this extraordinary spectacle. “Life was so harsh in 1731 when the mission was first planned, it really is a miracle that the people back then were able to survive, to design and build the missions, and to engineer this double solar illumination."
I know I've used the word unrestored or the like more than once, but park brochures and links stress it: that Mission Concepción is the oldest unrestored stone church in America. In its heyday, colorful geometric designs covered its surface, but the patterns have long since faded or been worn away. As you see, the roof is vaulted with a dome, and it is unretouched. And, per above, recent research is suggesting a deliberate placement of windows to illuminate the main altar on specific feast days.
Monitoring crack movement.
Still amazed by what we learned at Mission Concepción, Jimmy and I strolled the grounds, stopping at this grotto to sit for a minute before going on to our next course of action, which was to be determined. Meaning, what next? It was a very warm day, after a cool morning start, and wearing jeans was a mistake on my part, but at least my feet were cool/ish in my sandals. Four missions in two days have left us feeling thoroughly steeped in history. I haven't mentioned a word about what religion did to the native population, and I won't now. We were here to appreciate the beauty we saw.

