This September, we welcome you inside the cab of the Pere Marquette No. 11 Diesel Switcher — a true testament to resilience and restoration.

The PM No. 11 stands as a diesel switcher, purpose-built to navigate rail yards and industrial parks across short distances. Unlike the hefty steam locomotives of its time, this switcher offered enhanced visibility, reversibility, and maneuverability, revolutionizing rail operations.

But the story of the PM No. 11 isn’t just about its functionalities. Severely damaged during the 2003 Roundhouse roof collapse at the B&O Railroad Museum, the locomotive underwent a restoration in 2004, rising from the ashes to reclaim its former glory.

Join us this September as we celebrate the Pere Marquette No. 11 Diesel Switcher. Experience firsthand the incredible journey of restoration and witness the capabilities that made this switcher a game-changer in rail yard operations!

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PM No. 11
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PM No. 11
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Tours will be available between 10 AM – 4 PM.

Please note: This tour requires participants to climb stairs and walk on uneven pathways. A virtual tour will be available on-site via QR code. Docent Tour Guides stationed near the locomotive can answer any additional questions about the history and physical description of the locomotive. Small children must be accompanied by an adult guardian at all times.


Included with Museum Admission. FREE for B&O Members.
Visit on Wednesday, September 11 for $10 Admission Day!

More about the B&O Unlocked Series

Prepare to step into a world of exclusive access to a remarkable collection!

While these historical marvels have been glimpsed from afar, their doors have remained closed to most… until 2024.  Each month the B&O Railroad Museum will be choosing an item from the museum collection and be unlocking it for a limited time.

Secure your seat on this unprecedented journey through history by purchasing a B&O Membership — the ultimate ticket to explore and experience every hidden gem among these iconic trains. Don’t miss this opportunity to unlock the rails to history!

Step inside the complete 2024 series!

Upcoming Events at the B&O


Monthly Tours

Go inside the the B&O No. C-1775 Wooden Bobber Caboose!

July 10, 13 & 14

Tour the B&O No. 7701 “Dreamland Sleeper”

August 14, 17 & 18

June 21

6:30-9:30 PM

Sensory Inclusive Summer Camp

Week 1: June 24-28

The Battle at Monocacy Junction: How the Railroad Saved Washington

June 29 | Lecture @ 1:45 PM

June 30 & July 28

12-1 PM

July 4

10:30 AM – 3:30 PM

July 13

5 PM – 8 PM


Patrese T.
June 2021

I love that the museum is what remains of the old train yard and the number and variety of train cars is remarkable.

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