
Between the years of 1920 and 1925, about $6 million were invested in building a subway system for the downtown business district of Cincinnati, Ohio. Unfortunately, the proposed 16-mile system of track work was never completed. In its place are 7 miles of completed, but largely unused, tunnels that are still maintained up to this very day by the city.
The 7-mile tunnels run between Cincinnati’s central business district and the northern suburb of Norwood.
Cincinnati Subway has some great photos of the still-existing station platforms. The site also documents in pretty good detail the planned work and the intended future use of the entire system (had it been completed). These types of photos of abandoned or incomplete projects are always a treat!

