Haskell Free Library and Opera House

Haskell Free Library and Opera House
French: Bibliothèque et salle d'opéra Haskell
Haskell Free Library and Opera House in 2012
LocationStanstead, Quebec, Canada
Derby Line, Vermont, U.S.
Coordinates45°0′20.5″N 72°5′52″W / 45.005694°N 72.09778°W / 45.005694; -72.09778
Built1904–1905
ArchitectNate Beach & James Ball
Architectural style(s)Romanesque Revival, Victorian, Queen Anne Revival
Official nameHaskell Free Library and Opera House National Historic Site of Canada
Designated15 November 1985
Designated8 September 1976
Reference no.76000143
Official nameÉdifice Haskell Free Library and Opera House
TypeClassified heritage immovable
Designated22 December 1977
Reference no.93138

The Haskell Free Library and Opera House (French: Bibliothèque et salle d'opéra Haskell) 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 and postal codes: 93 Caswell Avenue, Derby Line, Vermont, 05830 and 1 rue Church (Church Street), Stanstead, Quebec, J0B 3E2. In addition, the library has two different phone numbers (+1-802-873-3022 and +1-819-876-2471) in its two respective countries.