B&O No. 545 "A. J. Cromwell" | B&O Railroad Museum

The B&O No. 545 “A.J. Cromwell” was one of nine locomotives heavily damaged by the Roundhouse roof collapse on Feb. 17, 2003.

The “A.J. Cromwell” was fully restored and returned to the Roundhouse in 2012.

Photos: B. Miller

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Historic Site

The B&O Railroad Museum’s 40-acre historic site, called Mt. Clare, is a National Historic Landmark and is the original site where the Baltimore and Ohio Railroad founded America’s first commercial railroad in 1827.

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Kristina R.

November 2024

This was such an awesome experience! The trains inside were phenomenal and all very well kept. But we went ahead and did the train ride also and that was just icing on the cake! This is a great experience for kids, teens, and adults like myself.