Montreal's RÉSO: A Podcast-Style Underground Tour

Beneath downtown Montreal runs the RÉSO, thirty-three kilometres of pedestrian passages that this audio tour treats as a city in its own right rather than a set of tunnels. The narration works like a podcast episode: an urban planner and a curious local trade observations about the floor tiles underfoot, the height of the ceilings and the stray fragments of history embedded along the way, tracing all of it back to a radical idea about how a northern city should handle winter. You walk it yourself, at your own pace — 2.7 kilometres, six stops — with the app matching audio to each location, handling navigation and offering an AI guide alongside. Expect the architectural set pieces hidden down here, the contested preservation battles this network provoked, and the social life that has settled in below the frost line. Built for travellers drawn to infrastructure, urban innovation and the texture of everyday life.