Montreal International Jazz Festival

Ten free outdoor stages, a downtown core closed to traffic, and 450-plus concerts running noon to midnight — the world's largest jazz festival treats "lineup" as a suggestion you build yourself, one block at a time. You can drift from a solo saxophonist busking-adjacent on a side stage to a headline act two streets over without buying a single ticket, and most people here are doing exactly that: wandering, not committed to any one plan.

Solo works because the entire festival is designed around foot traffic and standing crowds rather than seated, ticketed groups. Grab a smoked meat sandwich, find a curb or a patch of pavement near whichever stage has pulled you in, and let the night reshuffle itself — nobody clocks whether you arrived with anyone. The handful of indoor, ticketed headline shows are the only part that requires planning ahead; everything else rewards showing up and seeing what's playing.

Montreal in late June is warm, bilingual, and unusually relaxed about a few hundred thousand people taking over its streets for ten days — a genuinely low-cost, low-friction festival trip that doesn't ask you to coordinate with anyone but yourself.