Haskell Free Library and Opera House
The Haskell Free Library and Opera House () is a Victorian building that straddles the Canada–United States border, in Rock Island (now part of Stanstead), Quebec, and Derby Line, Vermont, respectively. The Opera House opened on June 7, 1904, having deliberately been built on the international border. It was declared a heritage building by both countries in the 1970s and 1980s. The library has two different addresses: 93 Caswell Avenue, Derby Line, Vermont, and 1 rue Church (Church Street), Stanstead, Quebec. Overview The library collection and the opera stage are located in Stanstead, but the main entrance and most opera seats are located in Derby Line. Because of this, the Haskell is sometimes called "the only library in the U.S.A. with no books" and "the only opera house in the U.S.A. with no stage". There is no entrance from Canada; however, there is an emergency exit on the Canadian side of the building. All patrons and visitors must use the U.S. entrance to access the building. Patrons from Canada are permitted to enter the United States door without needing to report to customs by using a prescribed route through the sidewalk of rue Church (Church Street), provided that they return