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 7, the Landis Valley Hotel, was built by Jacob Landis in 1855-56. It housed a post office from 1872-1913.