Nuestra Senora del Rosario (Holy Rosary) Mission Church was built in 1764 in Truchas, New Mexico. It is open in June, July and August. Inside this adobe church are two large altar-screens (reredos) by the renowned santero Pedro Antonio Fresquis.

Truchas is an unincorporated community in Rio Arriba County, New Mexico. On the scenic High Road to Taos, it is halfway between Santa Fe in the south, and Taos to the north. The community is remote, located at 8000 feet above sea level. A paved road did not enter the community until the early 1970s. 

Because the community had remained unchanged for so long, it still operates under many of the original Spanish land grant bylaws; for example, cars must share the roads with livestock. The community has views of the Truchas Peaks (nearly 5,000 feet above the community) and of the Española Valley. The settlers of Truchas hand-dug miles of irrigation ditches to bring water from the trout-filled Truchas river which gave the town its name.