A line house is a building deliberately located so that an international boundary passes through it.
The Haskell Free Library and Opera House is the best-known among buildings that straddle the Canada–United States border. The border is marked with boulders. In this picture, Canada is on the left side and the United States is on the right.
The international boundary is marked as a black line on the floor of the reading room of the Haskell Library. In this picture, Canada is on the right side of the line and the United States is on the left.
Hotel Arbez in La Cure. The border runs lengthwise through the two buildings, passing just to the left of the mural. The mural and everything to the right of it lies in Switzerland, and France lies to the left.
The Paul VI Audience Hall on the border between the Vatican City and Italy. The border runs crosswise through the building, with the Vatican City on the right side and Italy on the left side of the building.
Derby Line is an incorporated village in the town of Derby in Orleans County, Vermont, United States, slightly north of the 45th parallel, the nominal U.S.–Canada boundary. The population was 687 at t
Line house
…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…
Derby Line, VT, from the south
View from station c. 1908
The twin villages c. 1906