The U.S.-Canada border, at 5,525 miles long, is the longest land border between any two countries in the world. With a border that long, this line is bound to be disputed in certain areas and to cause problems in the many scenic small towns that lie along it. At the same time, the border can be a place of friendship and cooperation. For instance, in the 1930s, Glacier National Park of the U.S. and Waterton Lakes National Park of Canada jointly decided to form the Waterton-Glacier International Peace Park, which would be a border-adjacent park shared by both countries .
This wasn't the only border location that was formed to create better relations between the United States and Canada during the early 20th century. Between Vermont and Quebec, the Haskell Free Library and Opera House wa