13 Canadian Towns Built on Sites the Government Sealed Forever

Beneath a Canadian city sits 237,000 tonnes of arsenic so toxic the government admitted it can never be cleaned up — only frozen in place forever. And that's not even the worst one on this list. From asbestos ghost towns erased by the companies that built them, to radioactive villages dug up house by house, to a poison kept frozen at a cost of $4.38 billion — these are 13 Canadian places where the only answer was to seal the ground and never let anything out again. In this video we count down the most contaminated and sealed-off sites in Canada, including Cassiar's asbestos tailings, Uranium City, the Britannia Mine treatment plant that can never switch off, Pine Point's vanished streets, Africville, the Sydney Tar Ponds, Deloro, Port Hope's billion-dollar radioactive cleanup, the Highway of the Atom and the Village of Widows, and finally Giant Mine — the frozen arsenic monster under Yellowknife. These aren't your typical ghost towns. Nobody just walked away. The state drew a line and said: nothing comes out of here again. 🔔 Subscribe for more stories about abandoned places, environmental disasters, and the history most people never hear. 💬 Know a contaminated or sealed Canadian site we didn't cover? Drop it in the comments. Chapters: 00:00 The monster under Yellowknife 01:00 #13 Cassiar, BC 02:30 #12 Uranium City, SK 04:00 #11 Britannia Beach, BC 05:30 #10 Pine Point, NWT 07:00 #9 Lynn Lake & Sherridon, MB 08:30 #8 Africville, NS 10:00 #7 Frederick Street, Sydney, NS 11:30 #6 The Sydney Tar Ponds, NS 13:00 #5 Deloro, ON 14:30 #4 Port Granby, ON 16:00 #3 Port Hope, ON 18:00 #2 Port Radium & the Highway of the Atom, NWT 20:00 #1 Giant Mine, Yellowknife, NWT #GiantMine #AbandonedCanada #GhostTowns #Yellowknife #EnvironmentalDisaster #PortHope #CanadianHistory #ContaminatedSites #UrbanExploration #SydneyTarPonds #UraniumCity #Africville #ToxicWaste #Canada