3.1 2.4 2.9 3.1 3.0 3.3 3.6 3.6 3.6 3.1 3.6 3.2 38.5 Source: Environment Canada [22] 18 Dec 2006 Cityscape Architecture For over a century and a half, Montreal was the industrial and financial centre of Canada . The variety of buildings included factories , elevators , warehouses , mills