06/01/2026
🌊🚗 The Windsor-Detroit Tunnel holds an incredible title: it is the world’s only underwater international vehicle border crossing.
A fascinating new documentary takes you deep into the vault to show exactly how this subterranean wonder was constructed in the late 1920s.
What the documentary covers:
The Immersed Tube Method: How massive steel shells were built on land, floated out, and sunk into the riverbed with pinpoint accuracy.
Pure Grit: The untold stories of the workers who braved intense conditions to connect Canada and the US.
A Living Legacy: How a nearly 100-year-old tunnel still safely and smoothly handles thousands of daily commuters.
Ready to see how history was made beneath the river?
See video: https://zurl.co/9HWeV