Álamos is the best colonial town in Sonora, a former silver-mining city set where the desert begins to fold into the Sierra Madre Occidental. Its wealth peaked in the 18th and 19th centuries, then faded sharply enough that many mansions survived by being left alone.
That is the charm today. The centre is all portales, cobbled streets, shaded courtyards, and thick-walled houses restored with care rather than polish. It feels more like old northern Mexico than a resort version of it.
Come for a slow day of walking: the Plaza de Armas, the Purísima Concepción church, the Museo Costumbrista, and the back streets around the old mansions. Birders and hikers can push out toward the Sierra de Álamos-Río Cuchujaqui Biosphere Reserve, but the town itself is the reason to make the detour from Navojoa or Ciudad Obregón.