Montreal Biodome

This guide to the Montreal Biodome follows a concrete velodrome built for Montreal's 1976 Olympics, designed by architect Roger Taillibert, from two weeks of cycling and judo into years of near-empty silence. It traces how botanist Pierre Bourque pushed for something between a zoo, an aquarium and a greenhouse, and how construction starting in 1989 turned the old track into four walk-through ecosystems. You'll trace the same oval the cyclists once raced as you move between them.