A bank barn is a type of agricultural building commonly found in rural areas, particularly in the northeastern United States. It is built into the side of a hill or bank, allowing for easy access to the upper and lower levels. The design typically features a large, open space for storing hay and housing livestock, with a ramp or driveway leading to the upper level. This architectural style dates back to the 18th and 19th centuries and is often associated with Pennsylvania Dutch farming practices. The bank barn's unique structure maximizes space and provides protection from the elements, making it a practical choice for farmers.