4. San Miguel Mission (New Mexico)
Nestled in Santa Fe, San Miguel Mission is recognized as the oldest church structure in the United States, dating back to around 1610. This adobe sanctuary stands as a living relic of early Spanish colonization, marking the spread of European culture and faith in the Southwest decades before English settlements took root. Its thick walls have witnessed centuries of change, serving both Indigenous and Spanish communities. San Miguel’s enduring presence highlights a chapter of American history often overshadowed by events on the East Coast.
