An Urbsite article on the old theatre that was on the site, with it's facade now replicated on Sparks.
http://urbsite.blogspot.com/2021/10/henry-j-sims-fancy-tinsmithing.html
Plenty of images, here are a few:
For those wondering what was in the parking lot on Queen, the fairly nice blank wall of the threatre.
One proposal for the parking lot by the Ottawa Squash Club, 1974.