BlogTO has a one-stop shop for a varied archive of photographs from throughout Toronto's history, chronicling the city's architecture and evolution over the decades. It's a very cool piece to check out, though admittedly I'm totally in the tank for these "here's how we were" kind of features.
Very relieved to learn that my townhouse isn't on the site of an old industrial waste plant. Instead, it was just built over an ancient native burial ground. Nothing bad could possibly come of this!