Experience the wonder of crossing under.

The Detroit-Windsor Tunnel is the only vehicular international subaqueous border crossing in the world. It has been recognized as one of the great engineering wonders of the world and is one of the most important border crossings between the United States and Canada. Located between Detroit, Michigan and Windsor, Ontario, connecting the US Interstates to Ontario’s Highway 401, it is one of the fastest links between Canada and the United States.

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