Strange Borderlands Between U.S. and Canada

I've always been fascinated by maps. Don't know if it's a geek thing or not. I love finding “weird” things through maps, and now with Google Maps and Yahoo Maps, the world awaits me – sort of.

A treaty sets the western half of the border between Canada and the United States at the 49th Parallel. The border follows the 49th Parallel – actually a latitude coordinate – in a straight line from roughly north of Minneapolis, MN to all the way out just past Washington State into the middle of the Strait of Juan de Fuca. Once in the Strait, the boundary loops south and then west, so that Vancouver Island stays within Canada's boundaries. Other than that, everything north of the 49th Parallel is Canada's, and everything south of that is the United States'.