Silver Islet, Canada
Welcome to Silver Islet! This structure in Ontario, Canada was one of the world’s richest silver mines before nature reclaimed it. Experts estimate that the Silver Islet Mining company made nearly $3.25 million until it was closed down in 1884. As was typical at that time, the miners hired for this job weren’t fully aware of the dangerous conditions involved in working in the mine. Miners were made to dive into the depths of the water-filled shafts, which came with a variety of risks. It’s now an abandoned underwater structure that anyone can kayak out to and check out. Seeing the dark depths of the unused shafts will give you the creeps!