Well, Toronto city hall for sure. It's been a while since I'v lived there, but Queen Street from University to Spadina was always good for street photography, especially on a weekend. Harbourfront is good for a stroll and if you can find your way out to the Leslie Street spit, the skyline and sometimes wildlife can be good. For a parkish kind of place High Park is good, lots of people traffic, and of course the Legislature at Queen's Park, for some interesting historic buildings. Case Loma is definitely touristy but possibly worth a visit. The points of interest include the Science Centre, the Art Gallery of Ontario, and The Royal Ontario Museum and Toronto zoo,
Looking at non mainstream stuff, even things like hanging around the Bus Station on bay street can be interesting. And a stroll up and down Yonge Street from Union Station to the Eaton's Centre can be interesting.
The problem with the end of March is if the weather isn't good, you won't find a lot of people out. And looking for out of the way, I'm scratching my head, but I'm coming up with not much. Maybe the old brickyard off Pottery Road,
Don Valley Brick Works - Wikipedia, the free encyclopedia
or the Old Don jail.
Toronto.com – The Old Don Jail
The Don Jail saw 34 hangings. Case Loma may or may not have antique furniture on display I restored way back in my cabinet making days.
Casa Loma
And if you can get tickets of anything at Massey Hall, I'd go, just to be inside the place.
Massey Hall - Wikipedia, the free encyclopedia Event Listings
There's just too much to do there. And I'm not even getting into my old haunts.... my biggest problem thinking of going back to Toronto would be coming up with a schedule that didn't totally run me into the ground. Two weeks probably wouldn't be long enough.