Features huge, interactive HO scale model railroad depicting B&O passenger line from Union Station, DC to Brunswick Freight Classification Yards. Railroad equipment and memorabilia, social history exhibits, photographs, Victorian costumes, furnishings, toy, baseball, and medical history exhibits. C&O Canal Visitor Center and Pete Harper's Children's Hands-On Activity Room located on main floor. Open: Fri 10am-2pm; Sat 10am-4pm; Sun 1-4pm