B&O Railroad Museum
Baltimore and Ohio Railroad "Atlantic" #2 at the B&O Railroad Museum. Built in 1832, it is one of the oldest surviving American locomotives.
The B&O Railroad Museum has been called one of the most significant collections of railroad treasures in the world and has the largest collection of 19th-century locomotives in the U.S. The museum is located in the Baltimore and Ohio Railroad's old Mount Clare Station and adjacent roundhouse, part of the B&O's sprawling Mount Clare Shops site.
Mount Clare is considered to be a birthplace of American railroading, as the site of the first regular railroad passenger service in the U.S., beginning on May 22, 1830. It was also to this site that the first telegraph message, "What hath God wrought?" was sent on May 24, 1844, from Washington, D.C., using Samuel F. B. Morse's invention.
The collection includes 250 pieces of railroad rolling stock, 15,000 artifacts, 5,000 cubic feet of archival material, four significant 19th-century buildings, and a mile of track.