The Wisconsin-Minnesota border is a natural boundary that separates the states of Wisconsin and Minnesota in the United States. This border primarily follows the course of the St. Croix River and extends northward to the Lake Superior region. It is approximately 400 miles long and features a mix of urban and rural landscapes. The border is significant for both states, influencing trade, transportation, and tourism. Popular destinations along the border include the St. Croix National Scenic Riverway and the cities of Hudson in Wisconsin and Stillwater in Minnesota, which are known for their historic charm and outdoor activities.