CBC features a split town, half in Quebec and half in Vermont. The library and opera house straddles the border. I remember hearing a Ripley item about the opera house, saying that the American audience clapped for the Canadian performers on stage. The building is now a library, and the border simply runs through one aisle of books.
The border mostly runs down the middle of a street, where the odd houses are in one country and the even houses in another. CBC interviewed some locals, including one American who said “Poor Canada! It’s awful! Of course you don’t want to be the 51st state!”
Border cities, even between states, can be tricky. The DeVry building was on State Line Road between KCMO and Overland Park, officially in Missouri but actually straddled the line. Some of the classrooms were divided like the opera house, with teacher in one state and students in another. Once when a student needed an ambulance I called 911. They knew the building and asked me exactly where the student was, so they could call the correct ambulance service. The two police forces worked together seamlessly so a criminal couldn’t escape simply by crossing the line. I expect the police in Vermont/Quebec have similar arrangements, which are being disrupted now by Trump’s LBO collapsing tactic.
Polistra's Mill 