# Event Details

- **Event Name**: B&O Unlocked: MARC No. 7100
- **Event Start and End Date**: Wed, 17 Jun, 2026 at 10:00 am – Wed, 17 Jun, 2026 at 04:00 pm (-04:00)
- **Event Description**: America 250: B&O Unlocked 

Celebrate America’s Story—One Railcar at a Time 

The B&O Railroad Museum’s annual Unlocked series returns—this year with a special tribute to America’s 250th anniversary. Each month, step inside a different piece of rail history and experience the stories that helped build a nation. In honor of this milestone, American Freedom Train No. 1 will be opened twice in 2026—January and July—offering a rare chance to celebrate the spirit of freedom and innovation that defines America’s rail legacy. 

You’ll also have the opportunity to step inside the newly restored B&O No. 3316 “Washington” Observation Tavern Car. 

Become a B&O Member and receive free admission for each collection piece. Don’t miss this opportunity to unlock the doors on these historic pieces! 




MARC No. 7100:

Wednesday 6/17, Saturday 6/20, Sunday 6/21 (10 am – 4 pm) 


This June, we are unlocking the MARC No. 7100! 

The MARC No. 7100 is unlike any other locomotive in the B&O Railroad Museum collection. Built by GM-EMD in 1951 and sold to the B&O Railroad that same year, the No. 7100 began its life as a model F7-A diesel locomotive. In 1980, the locomotive’s 1,5000 horsepower diesel engine was replaced with a “head-end power plant.” The No. 7100 was no longer considered a “real” locomotive, but rather an Auxiliary Power Control Unit (APCU). This means that the unit can control a train from the back end, but it lacks the power required to pull a train on its own.  

The No. 7100 serviced the MARC commuter lines until the late 1990s. Today, the APCU is a symbol of technological development and modern commuter rail travel. Don’t miss your chance to step inside the cab and experience the modern railroad from an engineer’s perspective!
- **Event URL**: https://allevents.in/baltimore/bando-unlocked-marc-no-7100/200029394406642
- **Event Categories**: 
- **Interested Audience**: 
  - total_interested_count: 3

## Ticket Details

- **Ticket URL**: https://www.borail.org/events/unlocked-marc-7100/?utm_source=AllEvents.in&utm_medium=event-discovery-platform&utm_campaign=baltimore-events

## Event venue details

- **city**: Baltimore
- **state**: MD
- **country**: United States
- **location**: 901 W Pratt St, Baltimore, MD, United States, Maryland 21223
- **lat**: 39.28569
- **long**: -76.6327
- **full address**: 901 W Pratt St, Baltimore, MD, United States, Maryland 21223

## Event Organizer details

- **affiliate_id**: 2
- **organizer**: B&O Railroad Museum (https://allevents.in/org/bando-railroad-museum/23246546)

## Event gallery

- **Alt text**: banner
  - **Image URL**: https://cdn-az.allevents.in/events1/banners/276b42ba3f94201c795818029fe602cbf522c214e20517c2245b42bf947f8b4a-rimg-w1024-h680-dc060505-gmir?v=1775289236
- **Alt text**: thumbnail
  - **Image URL**: https://cdn-az.allevents.in/events1/banners/449d1fa630740c6ec7e8092eabb0ba8cd44fb46038b3b52c498bcb4571b9e078-rimg-w300-h300-dc191817-gmir?v=1775289237

## FAQs

- **Q**: When is the event happening?
  - **A:** Wed, 17 Jun, 2026 at 10:00 am (-04:00)
- **Q**: Where is the event happening?
  - **A:** 901 W Pratt St, Baltimore, MD, United States, Maryland 21223
- **Q**: Who is organizing the event?
  - **A:** B&O Railroad Museum
- **Q**: What type of event is this?
- **Q**: Where can I find ticket details about B&O Unlocked: MARC No. 7100 ?
  - **A:** You can find ticket details about this event on AllEvents.

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