Why Do Chicago’s Sidewalks Have a 170-Year-Old Secret?

Chicago sidewalk doors aren't decoration — they're the surface trace of a hidden system that once flooded half of downtown. This video traces how 1850s cholera forced Chicago to raise its own streets, why vault lights and coal chute doors still dot the Loop, and how a "telephone" company secretly built a sixty-mile railway that ruptured in the 1992 Chicago flood, causing two billion dollars in damage. If you've wondered why Chicago has doors in the sidewalk, this is the full story. TIMESTAMPS 0:00 Why Chicago's Sidewalks Have Iron Doors 0:50 The 1855 Raising of Chicago 2:48 What Are Vault Lights? 3:35 Brown Brothers and the Great Fire 5:40 Coal Chute Doors 8:03 The Secret Tunnel Company 10:33 Doors Meet the Tunnels 12:50 The 1992 Great Chicago Flood 15:08 What's Left Today Seen one of these doors and never known what was under it? Tell us where in the comments, and subscribe for more hidden Chicago history. SOURCES 1. Vaulted sidewalk - Wikipedia https://en.wikipedia.org/wiki/Vaulted... 2. Raising of Chicago - Wikipedia https://en.wikipedia.org/wiki/Raising... 3. Pavement light - Wikipedia https://en.wikipedia.org/wiki/Pavemen... 4. Brown Brothers city sidewalk vault light fragments - Urban Remains Chicago https://bldg51.com/2019/07/15/brown-b... 5. Richards & Kelly Mfg Co. - glassian.org https://glassian.org/Prism/RichardsKe... 6. The Chicago Freight Tunnels - mascontext.com https://mascontext.com/issues/network... 7. Chicago Tunnel Company - Wikipedia https://en.wikipedia.org/wiki/Chicago... 8. Six Tunnels Hidden Under Chicago's Loop - WBEZ https://www.wbez.org/stories/six-tunn... 9. Chicago flood - Wikipedia https://en.wikipedia.org/wiki/Chicago... 10. A Comedy of Errors: The Great Loop Flood of 1992 - WTTW https://www.wttw.com/node/16701 11. The Great Chicago Flood of 1992 - Chicago Magazine https://www.chicagomag.com/chicago-ma... #chicago #chicagohistory #chicago #chicagoland #undergroundchicago #hiddenhistory #chicagoloop #vaultlights #coalchute #chicagotunnels #greatchicagofire #urbanexploration #forgottenhistory