How Montreal was built and evolved over time

Montreal's built character changes quickly by district. In Old Montreal, stone commercial and institutional buildings reflect a port city that repeatedly rebuilt on the same narrow streets. Archaeological remains sit below later warehouses and offices, making the historic core a vertical record rather than a perfectly preserved colonial town.

The characteristic residential form is the plex: two or more attached dwellings, often three or four storeys high, with individual entrances. Late nineteenth- and early twentieth-century examples commonly use brick façades, balconies, exterior stairs and decorative ironwork. They put several households on a lot close to the scale of a single house while leaving room for rear lanes.

Industry produced a different landscape along the Lachine Canal. Water, rail and port connections drew factories, warehouses and workers' districts to the corridor. Reuse has turned many industrial buildings toward housing, offices and leisure, but the canal, locks and large structures still explain why development gathered there.

Downtown construction created an interior city. The first passages around Place Ville Marie opened in 1962, then expanded with the metro and Expo 67. RÉSO is a connected pedestrian network, not a single underground mall: its routes pass through independently managed stations, towers, hotels, shops and institutions.

Expo 67 and the 1976 Olympics enlarged the scale of civic building. Engineered islands, Habitat 67, the geodesic dome, stadium and velodrome treated architecture as an international statement. Their continuing reuse is part of the design story: the dome became the Biosphere environmental museum, and the velodrome became the Biodome.