Good call on Prince's Gate for Toronto. I wish that area were more built up so it could function as a bit more of a Brandenburg-gate type place.
The imposing RC Harris Treatment Plant on the opposite end of town is another one:
https://www.flickr.com/photos/etherflyer/18326898155/
https://en.wikipedia.org/wiki/R._C._...reatment_Plant
RC Harris Harvest Moon by
Frank Lemire, on Flickr