Parc Jean-Drapeau: the islands and the world's fair
Buckminster Fuller's dome, the pavilions of Expo 67, a stone fort, and the skyline across the water. This is a Claude-drafted route awaiting the editor's walk.

1. La Biosphère
Start at Fuller's geodesic dome — the United States pavilion of Expo 67, its acrylic skin long burned away, leaving the steel lattice as the city's most beautiful skeleton. Now an environment museum. Even from outside, walk a full circle of it; the structure changes with every step.

2. Place des Nations
The open-air forum where Expo 67 was opened and closed, restored after years of decay. Sit on the wide steps facing the water; this is where Expo's fifty million visitors were welcomed. Quiet now, which is the better way to feel it.

3. The river channel and the skyline view
Walk the western shore where the St Lawrence runs fast between the island and the city. The downtown towers stack across the water with the Jacques-Cartier bridge to the right. The current here is genuinely powerful; you'll hear it.

4. Stewart Museum / Fort de l'Île Sainte-Hélène
The low grey-stone fort, built by the British in the 1820s against an American invasion that never came. The arsenal and powder magazine ring a parade ground. Walk the ramparts for the channel view; check ahead whether the museum is open.

5. Calder's Trois disques (Man)
Alexander Calder's great steel stabile, made for Expo 67 — three black discs balanced on splayed legs, eight storeys of it. Stand underneath; it's built to be walked through, not just photographed. The skyline frames it from the rise behind.

6. La Plage Jean-Doré path back
Loop south along the wooded paths toward the old Expo grounds and the canals the fair left behind. You don't have to reach the beach itself; the willows and the still water are the reward. Back to the metro at Jean-Drapeau when you've had the island.

Parc Jean-Drapeau: the islands and the world's fair