The stone walls of Machu Picchu take your breath away as the morning mist lifts, tango dancers spin through golden light on a Buenos Aires street corner, a canoe glides silently down the world's widest river in the Amazon, and the Uyuni salt flat mirrors the sky beneath your feet until you can't tell up from down — South America has only 12 countries, but each one hits as hard as an undiluted shot of mezcal. You don't have to finish them all — every sip will stay with you for a long time.