The Haskell Free Library and Opera House is located in Stanstead, Quebec and Derby Line, Vermont. It was founded in 1904, and accedentally built on the border between Canada and the United States. This has caused inconveniences, as guards must be stationed in parts of the building to insure that no one tries to cross the border illegally.
The library collection and the opera stage are located in Stanstead, but the library check-out and the opera seats are located in Derby Line. Because of this, the Haskell is sometimes called "the only library in America with no books" and "the only opera house in America with no stage".