Niagara Scow
Canada
The Niagara Scow (also called the Old Scow or Iron Scow) is the unofficial name of the wreck of a small scow that brought two men perilously close to plunging over the Horseshoe Falls, the largest of the Niagara Falls, in 1918. The wreck can still be seen, upstream of the falls.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).