Tunnel 51: Secret Racing Research Facility
This boarded-up tunnel in the mountains of southwestern Pennsylvania dates back two centuries. It was originally built by Carnegie and Vanderbilt for a nineteenth-century railroad,...
Ghosts of the Duluth, Missabe, and Iron Range Railroad
Northern Minnesota’s economy has been powered by locomotives for over one hundred and thirty years. The ensuing boom after the nineteenth-century discovery of iron in...
Beach’s First Subway: Pneumatic Transit System
Alfred Beach was an inventor and editor of Scientific American magazine. He was also a visionary for subterranean rapid transit. By 1849, New York was...