Being New Yorkers, we have the opportunity to cross the border with Canada often. Have you ever had a border patrol agent ask you a weird question while crossing the border?
One of my favorite YouTubers, C.G.P. Grey recently took a fun, scholarly look at the United State/Canada border. Sure it looks straight as an arrow on a map, but looking closer, you'll see plenty of interesting features, at least to geography geeks like me.