The "Landis Valley Museum" is a living history museum located in Lancaster, Pennsylvania. It collects, conserves, exhibits, and interprets Pennsylvania German material, culture, history and heritage from 1740 through 1940. The museum was founded by the Landis brothers--Henry K. Landis and George Landis.Building 22, the Isaac Landis Complex, a house and barn, were built c.1875, and sold to Henry H. Landis in 1927. He added a feed mill to the complex.