For its third edition, the burgeoning Salón COSA, Mexico’s biannual “gathering of contemporary objects,” returned to its roots in CDMX after a stint in Guadalajara last fall. On a relatively intimate scale — 22 participating artists and designers showed recent and unpublished works — Salón COSA occupied the dance floor of an old cantina nestled among the cafés, nightclubs, and shops of Calle de Motolinia, one of the oldest streets in the city. With the walls and furniture of the bar-turned-exhibition-space cloaked in a fresh coat of cerulean blue, this year’s curation reflected Salón COSA’s nocturnal setting.