Aduana Ghost Town and Templo de Nuestra Señora de Balvanera

Aduana sits in the hills a short drive from Álamos and was the site of the original silver strike in the 1680s that triggered the boom which built Álamos into a regional capital. The settlement once processed and taxed (the name Aduana means 'customs house') silver extracted from the surrounding Promontorios range, but as the veins were exhausted through the 19th and 20th centuries, the population dwindled to a small fraction of its former size, leaving crumbling adobe walls and foundations scattered among the hills. The Templo de Nuestra Señora de Balvanera, a modest chapel associated with a local legend of a miraculous apparition, has been restored and remains an active pilgrimage site and a functioning parish for the few families still living in the area. Walking the dirt lanes past ruined walls and the old mine workings gives a tangible sense of a boom-and-bust mining economy that most Sonoran silver towns experienced, in contrast to Álamos's own successful 20th-century restoration. There are no formal museum facilities; the visit is self-guided through the open village and its chapel.