Parc Jean-Drapeau is what a city does with a world's fair once the world goes home: keeps the dome, keeps the art, and lets the river have the rest. Two islands in the St Lawrence — one natural, one built from metro excavation — that held Expo 67 and now hold a park you reach by a single stop on the Yellow line.
Start at the Biosphère, Buckminster Fuller's geodesic dome stripped to its steel lattice after a 1976 fire, more beautiful as a skeleton than it ever was skinned. Walk a full circle of it. Then down to Place des Nations, the restored forum where Expo opened, and out to the western shore where the channel runs hard and the downtown skyline stacks across the water.
The Stewart fort, low and grey, guards the high ground — British stonework against an invasion that never came. Don't miss Calder's Trois disques, eight storeys of black steel built to be stood under. Loop back through the willows and the fair's old canals to the metro. One stop home, the island behind you in the river.
