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Battlefield / Military Site

Fort McNair (Grant Hall)

Grant Hall (Building 20), built 1830-1831, site of the 1865 Lincoln Conspirators Trial

Grant Hall, 4th and P Streets SW, Washington, DC 20319

Wheelchair Accessible Research-Backed · 5 sources

Research updated June 2026

Age

All Ages

Cost

Free

Active military installation. The quarterly Grant Hall courtroom open houses are free to attend; guests without a Department of War, federal or Automated Installation Entry ID are asked to register in advance for base access. Check with the installation's public affairs office.

Access

Wheelchair OK

The third-floor courtroom is reached only by two flights of stairs, and the building has no elevator. Sidewalks do not run the entire route from the gate security checkpoint to Grant Hall, so pedestrians may have to walk on grass or on streets at times.

Equipment

No Photos

ApparitionsPhantom footstepsDoors opening/closing

Fort McNair's haunted reputation centers on Mary Surratt, who was tried in Grant Hall in May-June 1865 and executed on the post's south courtyard scaffold on July 7 that year. As the first woman executed by the U.S. federal government, her case has been culturally durable, and the building's continuous use after the trial generated more than 150 years of accounts.

When Building 20 served as married officers' quarters in the twentieth century, families reported a recurring story about sick children. Parents would put a feverish child to bed and find the child unusually quiet the next morning; on questioning, the child described "the lady standing behind you" pressing a finger to her lips. Parents who showed children a photograph of Mary Surratt reported the children identifying her as the woman they had seen.

During the run-up to the 2012 rededication, contractors performing structural and finish work on Grant Hall reported the most consistent disturbances. Tradesmen working before dawn described footsteps in the attic when the building was confirmed empty, and at least one carpenter reported being followed closely up the cellar stairs by a presence he could not see. A handful of accounts describe the appearance of a single fly traveling between rooms in the otherwise sealed attic.

Folklore aggregators repeat additional tales, particularly that Mary Surratt's footprints melted snow between the prison cells and the gallows, and that a window in the room where she kept vigil with her daughter on the night before the execution still mists over inexplicably. The Army's published historical material treats the trial and execution as documented record and the apparitions as a separate body of post folklore.

Notable Entities

Mary Surratt

Plan Your Visit

1 way to experience
Museum Visit

Grant Hall Courtroom Public Open House

Grant Hall's restored third-floor courtroom, where the 1865 military tribunal of the Lincoln assassination conspirators was held, is open to the public during free quarterly open houses from 10 a.m. to 4 p.m. Guests without a Department of War, federal or Automated Installation Entry ID are asked to register in advance for base access. The courtroom is reached by two flights of stairs, and there is no elevator. No backpacks or large bags are allowed inside Grant Hall.

Cost:
Free
Days:
Quarterly open houses; 2026 dates: Feb. 7, May 2, Aug. 1 and Nov. 7
Times:
10 a.m. to 4 p.m.
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Sources & Further Reading

Every HauntBound history is researched from documented sources. We clearly separate verified historical fact from paranormal folklore.

  1. 1.army.mil/article/116505/lincoln_era_history_comes_back_to_life
  2. 2.washingtonian.com/2015/07/03/lincoln-co-conspirators-hung-1865-lewis-powell-mary-surratt-david-herold-george-atzerodt-old-arsenal-penitentiary-dc-fort-mcnair
  3. 3.thesouthwester.com/2013/05/03/famous-building-at-fort-mcnair-restored-and-rededicated
  4. 4.wtop.com/halloween-news/2018/10/local-legends-the-lincoln-conspirator
  5. 5.audacy.com/connectingvets/news/dont-trash-talk-the-ghosts-tales-from-haunted-fort-mcnair

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Frequently Asked Questions

Is Fort McNair (Grant Hall) family-friendly?
The site's history involves the trial and execution of Lincoln assassination conspirators, including the first federal execution of a woman. Discussion of executions may be unsuitable for younger children. Public on-site access is limited to scheduled open houses. Overall family fit: Moderate.
How much does it cost to visit Fort McNair (Grant Hall)?
Active military installation. The quarterly Grant Hall courtroom open houses are free to attend; guests without a Department of War, federal or Automated Installation Entry ID are asked to register in advance for base access. Check with the installation's public affairs office. This location is free to visit.
Do I need to book in advance?
No advance booking is required, but checking availability is recommended.
Is Fort McNair (Grant Hall) wheelchair accessible?
Yes, Fort McNair (Grant Hall) is wheelchair accessible. Terrain: The third-floor courtroom is reached only by two flights of stairs, and the building has no elevator. Sidewalks do not run the entire route from the gate security checkpoint to Grant Hall, so pedestrians may have to walk on grass or on streets at times..