Cincinnati’s Ghost Subway: The $6 Million Tunnel That Never Saw a Train

Beneath Cincinnati lies a subway system that was fully built—but never used. Miles of tunnels. Finished platforms. Zero trains. In the 1920s, the city spent millions building a modern subway… then ran out of money before a single passenger arrived. Nearly a century later, the tunnels remain sealed, silent, and forgotten. This is the story of America’s largest subway that never opened—and the ambition that died underground. 👉 Subscribe to Empire Ruins for cinematic documentaries on abandoned megaprojects, lost empires, and the monuments history tried to bury.