ShotHotspot has mapped 10 abandoned places in Algoma, Ontario, ranked by how often they're photographed, viewed and voted for. The most popular are House Iron Bridge Ontario, Lake Superior Scene Wes and St Mary's School Ontario. Some are private property or unsafe, so get permission before you visit.
We don't know whether you're allowed to visit any of these places. Many are private property, closed to the public or unsafe: get permission from the owner or the relevant authority, and take safety precautions.