Line house

Building deliberately built across a geopolitical boundary

A line house is a building deliberately located so that an international boundary passes through it. One such building on the boundary between the United States and Canada is the Haskell Free Library and Opera House in Stanstead, Quebec, and Derby Line, Vermont. The border is marked on the floor in a reading room and an auditorium. A number of single-family residences and some industrial buildings straddle the boundary in those two towns.

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