From Minnesota to the Puget Sound, the United States-Canadian border traces the 49th parallel, stretching some 2,500 miles. The boundary doesn’t stop when it hits the water. It extends over the waves to the Georgia Straight. In doing so, an oversight in the 1849 Oregon Treaty, the line clips the end of Canada’s Tsawwassen Peninsula, creating a 5-square-mile lobe of U.S. soil, an island offshore.

This is Point Roberts, Washington. The place at the end of the line.

Read more about Point Roberts here.