It's Canada!

When taking off from Detroit and flying directly South, although you may be on a domestic flight to, for example, Houston, Texas, the first country you fly over for a few minutes is actually Canada!

It's true. When flying directly South from Detroit, you fly over Windsor, Ontario for a short time, then you resume flying over U.S. territory. It's that tip of Canada that reaches right under Michigan.

The same question could be asked about what country you cross when driving from the mainland city of Point Roberts, WA to Seattle, WA. And the answer is the same: Canada! You have to drive through Canada to get from Point Roberts to Seattle...

More Info: www.google.com