Folder: Underworld Page 1 of 2
Construction of the Subway Tunnel under 6th Ave., New York, 1939. Photo: Bob Seelig/New York Daily News
The Beach Pneumatic Subway Tunnel under Broadway, 1873. New-York Historical Society # 70265 In 1869, folowing the use of pneumatic tubes for postal communication, Alfred Ely Beach started…
Ideal aquatic system of underground canals, rivers and seas. Athanasius Kircher, Mundus subterraneus (1664)