They say nothing is what it seems – and when it comes to Cincinnati, Ohio, things couldn’t be more accurate. Beneath this American city lies a nearly 100 years old subway tunnel with a length of over 3.5 km – and most inhabitants are unaware of its existence. But how is it possible for such a great project to simply vanish for such a long time? During the late 19th century, the city of Cincinnati was in the top seven most populated towns in USA. With people using both cars and carriages for transportation, even the largest streets and boulevards […]