Going back and forth between the United States and Canada requires a passport and customs check, right? Usually, but one exception manifests itself in the form of the Haskell Free Library and Opera House. Located directly on top of the border between Vermont and Quebec, it's "the only library in the world that exists and operates in two countries at once."

Both Americans and Canadians can go in without a passport, but the Canadian entrance is a little more intensive: "[t]o enter they have to walk past a series of security cameras … and then past the U.S. border guard stationed out front." Going out the wrong exit door could be a problem, too, because "if they walk out and continue into the U.S. they'll be picked up for illegal entry."

Possible Preaching Angle:

Maybe not all of us have gotten in trouble at the U.S./Canada border, but haven't we all experienced that fear of making a wrong move—of wandering into trouble?

Source:

Sarah Yahm, “The U.S.-Canada Border Runs Through This Tiny Library,” Atlas Obscura (7-7-16)