Baltimore & Ohio (B&O) Railroad Museum

American railroading got its start here when the B&O was chartered in 1827, and the first locomotive, the Tom Thumb, was built here. The remarkable roundhouse was restored after the roof collapsed in a 2003 snowstorm and is now more accessible for visitors with disabilities and parents with strollers. As damaged pieces are repaired, they are returned to the roundhouse, but it's still filled with an awe-inspiring collection of engines and rolling stock. A car barn has the largest locomotive ever built. Platforms enable visitors to tour trains outside, including a World War II troop sleeper, a caboose, and a refrigerated car where a train movie runs continuously. A short train ride ($2 adults, $1 kids) takes passengers along some of the oldest train tracks in the world. Trains depart at 11:30am Wednesday through Friday, three times on Saturday and twice on Sunday from April through December; weekends only in January.

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