A Pennsylvania barn is a type of bank barn built in the United States from about 1790 to 1900. The style's most distinguishing feature is an overshoot or forebay, an area where one or more walls overshoot its foundation. These barns were banked and set into a hillside to ensure easy access to the basement and the level above. Almost all Pennsylvania barns also have gable roofs.[1] Barn scholar Robert Ensminger classified the Pennsylvania barn into three types: Standard Pennsylvania, Sweitzer, and Extended Pennsylvania barns.[2]: 56 The Pennsylvania-style barns were also built in the Shenandoah Valley, as well as west of Pennsylvania and in Canada.