This railway tunnel near St. Catharines,Ontario, was built approximately 140 years ago and closed just over a century ago after a double swing bridge for a newer railway was constructed. The now abandoned tunnel runs under an area that was the original Welland Canal for well over 500 feet, and decreasing in height as you head east before ending in a silt-filled wetland. The structure is stone and timber,the floors are filled with mud, and there is a fixed dripping sound inside the tunnel. Although there are claims the tunnel is haunted, and the feeling of ghosts is likely is the result of the eerie dripping sound and the visible fog of your breath,as the dark abandoned tunnel is quite cold even in the heat of summer.
Source: atlasobscura.com