So this would have been taken in the early 1970s from a rooftop in Westmount, likely at Grosvenor and Boul. de Maisonneuve (which you can see in its pre-bicycle path form centre-left in the pic).

This skyline view would have remained more or less constant until the late 1980s, and is the earliest memory I have of the city, which was eagerly pointed to me by my father when I was a wee toddler. I can remember parking off of St-Antoine and watching the construction of what was then known as the Laurentian Bank Building, and then walking under the CIBC Building, thinking it was the tallest I had ever seen.