Every explorer needs a map, and this site allows you to compare an array of thematic maps. What types of housing and demographic features are you interested in? What level of detail do you need? From the viewpoint of a hawk flying overhead, you can discover entire populations — aggregations of individuals. Or you can study families in their homes, which have long since been replaced by buildings with glass façades, on streets whose names have changed. These fascinating interactive maps are the results of a 20-year project titled “MAP: Montréal, l’avenir du passé” (Montréal: The Future of the Past).