Not quite date, but a shadow of its former self, the St. Laurent Shopping Centre. Once Ottawa's premier mall, it expanded several times, the last time in 1987 when the City built the underground Transitway station at the back, along the Queensway.
In the 2000s, they had major expansion plans that would have secured it's place as the largest mall in Ottawa however, those plans were shelved, leaving the path wide open for Rideau, Bayshore and even Les Promenades in Gatineau to not only catch-up, but surpass it with big name retails new to the Ottawa-Gatineau Market.
After the departure of Sears, Spirit of Halloween made a few appearances and now Urban Behavior taking up a small part of the fallen giant's former space. The Cinema is still around, as a second-run, and rundown, venue. A former "Cyberdome" is now a private college and all the things that made the mall unique (glassy entrances, cool steam-punk balloon art along the skylights, the fountain, interesting and colourful logo...) were all removed over the last two decades, mainly as part of a modernization effort that transformed it into yet another generic dying mall.
Here is it under construction back in 1967, from Lost Ottawa on Facebook:
Entrances, before and after renovations in 2014:
Before
https://www.google.ca/imgres?imgurl=...MygAegUIARDGAQ
After:
https://www.google.ca/imgres?imgurl=...MygCegUIARDKAQ