📜 A little-known subterranean street runs under some of Chicago's best-known buildings.
🔍 An old freight corridor, largely forgotten and invisible in the modern cityscape.

Why Go

🚶 Explore a hidden, historic street
📸 Unique urban photography opportunities
🎶 Inconspicuous access for House of Blues musicians

Why Avoid

🚧 Sections fenced off to regular traffic
⚠️ Access can be difficult to find

Tips

👣 Reachable by foot only.
📍 Access points near Kinzie and Kingsbury, or Kinzie and LaSalle, or Marina Towers marina level.

Hours

🕒 Always accessible, but some sections are blocked.