The Baltimore & Ohio Railroad Museum, a full affiliate of the Smithsonian Institution, is dedicated to the preservation and interpretation of American railroading and its impact on American society, culture and economy. The Museum is home to the oldest, most comprehensive collection of railroad artifacts in the Western Hemisphere including an unparalleled roster of 19th and 20th century railroad equipment. The 40-acre historic site is regarded as the birthplace of American Railroading and includes the 1851 Mt. Clare Station, the 1884 Baldwin Roundhouse and first mile of commercial railroad track in America.