TLDR
First Continental Congress met here in 1774. Also a Revolutionary hospital. The haunting is faint: footsteps, voices, one weird smell.
The Full Story
The First Continental Congress met at Carpenter's Hall in September 1774. Fifty-six delegates from twelve colonies argued for seven weeks inside the small brick assembly room on the second floor of what was then, and still is, a private guild building owned by the Carpenters' Company of Philadelphia. History books stop there. The rest of the building's eighteenth century is quieter and bloodier, and it is the rest that people bring up when the tour guides get asked about the ghosts.
During the Revolution the building served as a hospital and an arsenal. Those two roles do not usually share a floor plan. Wounded men were brought here to die, and gunpowder was stored here against the British. The Carpenters' Company, who finished the hall in 1770 and has owned it continuously since, prefers the Continental Congress story in its lobby signage, which is one reason the wartime period stays in the footnotes.
The reported phenomena are modest. Footsteps with no walker. Low voices on the stairs. An odd smell that visitors describe as something between rusted iron and old sweat, present in one ground-floor room and absent a few feet away. No named ghosts. No specific dates. No one moment anyone points to and says, this is when it started.
Philadelphia's haunted sites are clustered tightly in Old City, and Carpenter's Hall is a stop on most of the ghost tours that run between Independence Hall and Fort Mifflin. The ghost-tour treatment inflates the material. The plainer reading: a lot of men bled out on this floor in 1777 and 1778, the building has not been gut-renovated in the two hundred and fifty years since, and the reports are what you would expect from that combination. Low. Non-specific. Steady.
Carpenter's Hall is better read as a civic shrine with a faint haunting than a haunting with a civic backdrop. The history is the draw. The smell in the ground-floor room is a footnote.
Researched from 6 verified sources. How we research.