Photograph of William E. Lass at boundary monument 925, looking north to the northwest corner of Lake of the Woods. This is the northernmost marker on the meridian strip between Buffalo Bay and Northwest Angle Inlet. Photographed by William E. Lass on May 23, 1972.
Minnesota's Northwest Angle in Lake of the Woods is farther north than any other part of the contiguous United States. Logically, it would seem that this area of about 123 square miles should be in Canada. But this oddest feature of the entire U.S.–Canada boundary was the proper result of American treaties negotiated with Great Britain.