B&amp;O Railroad MuseumB&amp;O Railroad Museum B&O Railroad Museum The B&O Railroad Museum is a museum exhibiting historic railroad equipment in Baltimore, Maryland. The Baltimore and Ohio Railroad (B&O) company originally opened the museum on July 4, 1953 with the name of the Baltimore & Ohio Transportation Museum. It 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, and retains 40 acres of the B&O's sprawling Mount Clare Shops site , which is where, in 1829, the B&O began America's first railroad and is the oldest railroad manufacturing complex in the United States. 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 electric telegraph. The museum houses collections of 19th- and 20th-century artifacts related to America's railroads. The  collection includes 250 pieces of railroad rolling stock, 15,000  artifacts, of archival material, four significant 19th-century buildings, including the historic roundhouse, and a mile of track, considered the most historic mile of railroad track in the United States. Train rides are offered on the mile of track on Wednesday through Sunday from April through December and on weekends in January. In 2002, the museum had 160,000 visitors annually. The museum also features an outdoor G-scale layout, two indoor HO scale model, and a wooden model train for children to climb on. From Thanksgiving through the New Year, local  model railroad groups set up large layouts on the roundhouse floor and in select locations on the grounds of the museum. A museum store offers toys, books, DVDs, and other railroad-related items. The museum and station were designated as a U.S. National Historic Landmark in 1961. In 2008, the Museum won three awards in Nickelodeon's Parents' Picks Awards in the categories of Best Museum for Little Kids, Best Indoor Playspace for Little Kids, and Best Indoor Playspace for Big Kids. Television and film actor Michael Gross is the museum's "celebrity spokesman". The museum definitively documented 24 Freedom  Seekers that used the B&O Railroad on their journeys on the Underground Railroad - 8 of which traveled through the museum's historic site of Mount Clare. In 2021, the museum's Mt Clare Station building was designated as a National Park Service Underground Railroad Network to Freedom site. The museum also hosts an annual Day out with Thomas event every year, complete with the train's excursion including a non-powered Thomas the Tank Engine replica. History. The inaugural horse-drawn B&O train traveled the of the newly completed track from Mount Clare to Ellicott Mills (now Ellicott City, Maryland ), on May 22, 1830, the first regular railroad passenger service in the U.S. The existing Mount Clare station brick structure was constructed in 1851. The adjacent roundhouse designed by Ephraim Francis Baldwin was built in 1884 to service the B&O's passenger cars. For much of its history, the B&O had been collecting locomotives and other artifacts from its history for public relations purposes. This collection was stored in various places until the railroad decided to centralize it in a permanent home. The car shop of the Mt. Clare Shops was chosen, and the new museum opened on July 4 , 1953. The museum ended up outliving its parent B&O Railroad, and was kept intact by both the Chessie System and CSX Corporation. In 1990, CSX deeded the property and collection to the newly formed, not-for-profit museum organization governed by an independent board of directors and provided it with a $5 million endowment. In 1999, the museum became affiliated with the Smithsonian Institution. In the early morning of February 17, 2003, heavy snow from the Presidents' Day Storm collapsed half of the roof of the museum's roundhouse. Although the structure's central support columns remained standing, the  supporting iron struts and ties of the destroyed roofing sections failed under the snow load. The museum suffered heavy damage not only to the roundhouse itself but also to the collection within the roundhouse. Some of the items were damaged beyond repair. Reporting on the devastation the following day, "The Baltimore Sun" said, "...hours after the collapse, columns of mangled steel stuck out from the roundhouse ... Locomotives and passenger cars in the museum's collection, some dating from the 1830s, could be seen covered with snow and debris." The roundhouse, with a newly repaired roof, reopened to the public on  November 13, 2004, and the damaged locomotives and cars were surrounded by a plexiglass barrier. As of September 2015, all damaged exhibits have been restored to their original appearance. After the roof collapse, subsequent fundraising and restoration allowed the museum to upgrade many of its facilities. In 2005 the museum opened a new service facility west of the roundhouse for restoration of historical equipment and maintenance of active equipment. Collection. The B&O Railroad Museum possesses the oldest and most comprehensive American railroad collections in the world. Dating from the beginning of American railroading, the collection contains locomotives and rolling stock , historic buildings, railroading artifacts, and an extensive archives and research library that document the impact of American railroading and the Baltimore & Ohio Railroad on American economics, culture, and history. The collection is being made available through an online searchable database. Rolling Stock Collection Highlights. The museum's rolling stock collection include both originals and replicas, some of which were built by the B&O for its centennial "Fair of the Iron Horse" in 1927. Collection highlights include: Exhibitions. The B&O Railroad Museum has over nine public acres of historic buildings and grounds with exhibitions and collection items on display. Some highlighted  exhibitions include: B&O Railroad Museum The B&O Railroad Museum is a museum exhibiting historic railroad equipment in Baltimore, Maryland. The Baltimore and Ohio Railroad (B&O) company originally opened the museum on July 4, 1953 with the name of the Baltimore & Ohio Transportation Museum. It 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, and retains 40 acres of the B&O's sprawling Mount Clare