Is Fort Mifflin Haunted?
Fort Mifflin in Philadelphia, Pennsylvania, is one of the most haunted military sites in the United States, where the ghosts of soldiers who died defending the colonies during the Revolutionary War still march the ramparts. Built in 1771, this fort endured a devastating British siege in 1777 that left hundreds dead and the structure in ruins. Over two centuries later, visitors and staff report hearing phantom drumbeats, seeing translucent soldiers in period uniforms, and feeling the unmistakable presence of the dead in the dark corridors beneath the fort’s crumbling walls. The weight of bloodshed and sacrifice at Fort Mifflin has created what many believe to be one of the most active haunted sites in the northeastern United States.
The fort sits on a peninsula along the Delaware River, surrounded by marshland and tidal flats. Its strategic position made it a critical defensive point during the Revolutionary War, and its violent history has left an imprint that many say can never be erased. Fort Mifflin was designated a National Historic Landmark in 1970, but its status as a haunted location draws almost as many visitors as its historical significance.
History
Construction and Early Years (1771-1775)
Fort Mifflin was constructed between 1771 and 1775, making it one of the first American-built military fortifications. Originally named Fort Island Battery, it was designed to protect the Delaware River approach to Philadelphia from enemy ships. The fort was built with thick stone walls, a citadel, and a series of batteries mounted with cannons that could command the river in both directions. The construction employed local laborers and stonemasons who quarried Pennsylvania limestone for the walls, some of which measured several feet thick.
The fort was designed by military engineers who studied European fortification techniques. Its layout included a central parade ground, officer quarters, barracks for enlisted men, powder magazines, and a hospital. The walls formed an irregular polygon shape that followed the contours of the island, providing overlapping fields of fire from multiple gun positions. At the time of its completion, Fort Mifflin was considered one of the most modern fortifications in the colonies.
The Revolutionary War Siege (1777)
The defining moment in Fort Mifflin’s history came during the autumn of 1777. As General William Howe’s British army advanced on Philadelphia, George Washington ordered the garrison at Fort Mifflin to hold the fort at all costs. The delay was critical — every day the fort held gave Washington’s army time to regroup and prepare defenses further up the Delaware River.
On September 25, 1777, British forces under the command of Admiral Richard Howe began a bombardment of the fort. The garrison, commanded by Colonel Samuel Smith of the 3rd Pennsylvania Artillery, numbered roughly 400 men against an overwhelming British force. For six weeks, the defenders endured relentless cannon fire, mortar bombardment, and eventually a direct assault.
The bombardment was devastating. British warships fired over 2,000 cannonballs and mortar shells into the fort. The stone walls were breached in multiple places. Buildings inside the fort were reduced to rubble. The defenders suffered catastrophic casualties — by some accounts, the death toll reached as high as 250 men, including Colonel Smith himself, who was wounded multiple times before finally being evacuated.
On November 15, 1777, the remnants of the garrison — fewer than 100 men — abandoned the fort and crossed the Delaware to New Jersey. The British occupied the ruins, but the six-week delay had accomplished its purpose. Washington had time to move his army into winter quarters at Valley Forge.
The Civil War and Decline (1861-1866)
Fort Mifflin was repaired and returned to service after the Revolutionary War, but its military importance had diminished. During the Civil War, the Union Army converted the fort into a military prison. Hundreds of Confederate prisoners of war were held within its walls during the conflict, enduring harsh conditions and disease. Many died and were buried in unmarked graves near the fort.
After the Civil War, the fort was decommissioned and fell into disrepair. The surrounding marshland was filled in over the following decades, and the island that Fort Mifflin once occupied was connected to the mainland. By the early 20th century, the fort was a crumbling ruin, largely forgotten except by local historians.
Preservation and Restoration (1960s-Present)
In the 1960s, a group of local historians and preservationists formed the Fort Mifflin Historical Society to save the fort from demolition. Through decades of fundraising and restoration work, the fort was gradually brought back from the brink of destruction. In 1970, Fort Mifflin was designated a National Historic Landmark. Today, the fort is open for tours, events, and educational programs, drawing thousands of visitors each year who come to learn about its history — and to encounter its ghosts.
The Mystery / Paranormal Activity
The Drummer Boy
One of the most frequently reported apparitions at Fort Mifflin is the ghost of a young drummer boy who died during the 1777 siege. Visitors and staff report hearing a slow, rhythmic drumbeat echoing across the parade ground, particularly at dusk and after dark. The sound has been described as coming from no particular direction — it seems to surround the listener.
Several staff members have reported seeing the translucent figure of a young boy in Continental Army uniform, standing near the officers’ quarters, beating a drum. The figure is described as small, perhaps twelve or thirteen years old, with a gaunt face and hollow eyes. Unlike many other apparitions at the fort, the drummer boy is said to appear relatively frequently, with multiple sightings reported each year.
The Ghost of Colonel Samuel Smith
Colonel Samuel Smith, who commanded the garrison during the 1777 siege, is reported to haunt the fort’s ramparts. Smith was wounded multiple times during the bombardment and was finally evacuated just days before the fort was abandoned. He survived his injuries and went on to serve in the Pennsylvania legislature before dying in 1802.
His ghost has been seen standing on the ramparts, gazing out at the Delaware River in the same spot where he once surveyed the British fleet. Witnesses describe a tall man in a Continental Army officer’s uniform, standing motionless with his hands clasped behind his back. The apparition typically appears at twilight and vanishes when approached.
The Marching Soldiers
Perhaps the most chilling phenomenon at Fort Mifflin is the sound of marching soldiers. Multiple witnesses have reported hearing the rhythmic tramp of boots on gravel — the sound of a column of men marching in formation — even when the fort is empty. The sound typically begins near the parade ground and moves toward the ramparts before fading into silence.
Some witnesses have reported seeing translucent figures in Continental Army uniforms marching in formation across the parade ground. The figures are described as indistinct, with blurred features, but their uniforms and muskets are clearly visible. The marching soldiers are most commonly reported in the autumn months, around the anniversary of the 1777 siege.
The Prison Cells
During the Civil War, Fort Mifflin served as a prison for Confederate prisoners of war. The cells beneath the fort are said to be among the most haunted areas. Visitors report hearing moaning, sobbing, and whispered voices coming from empty cells. The temperature in the cells is consistently several degrees colder than the rest of the fort, even in summer.
One visitor, a paranormal investigator who visited the fort in 2017, reported:
“I was walking through the prison cells when I heard sobbing — a man, crying. I called out, ‘Are you okay?’ The crying stopped. But then I heard whispering — voices I couldn’t understand. The temperature dropped so fast I could see my breath.”
The Shadow Figures
In recent years, staff and visitors have reported encountering shadow figures throughout the fort. These dark, human-shaped shadows move through doorways, along corridors, and across the parade ground. Unlike the translucent soldier apparitions, the shadow figures are solid black — they absorb light rather than emitting it.
The shadow figures are most commonly seen in the officers’ quarters and in the fort’s tunnels. Several staff members have reported being followed by shadow figures while closing up the fort at night. The figures appear at the edge of peripheral vision and vanish when directly observed.
Evidence and Investigations
Fort Mifflin has attracted the attention of numerous paranormal investigation teams over the years. The fort’s well-documented history of violent death, combined with the consistent reports of apparitions and unexplained phenomena, make it a compelling subject for paranormal research.
The Paranormal Research Society of Pennsylvania conducted an investigation at Fort Mifflin in 2016. Their equipment captured several anomalies, including electronic voice phenomena (EVP) in the prison cells and thermal imaging that showed a human-shaped cold spot moving across the parade ground when no one was present.
“The evidence we collected at Fort Mifflin was among the most compelling we’ve ever recorded. The EVPs in the prison cells were clear and distinct — they sounded like men speaking in distress. And the thermal anomalies matched the locations where staff have reported seeing apparitions.” — Lead investigator, Paranormal Research Society of Pennsylvania
The Philadelphia Ghost Hunters Alliance has investigated Fort Mifflin multiple times. In their 2019 investigation, they reported capturing audio of what sounded like a drumbeat in an area where no drums were present, and video of a translucent figure moving along the ramparts.
Fort Mifflin also appears on numerous lists of the most haunted places in America, including rankings by the Travel Channel, the History Channel, and various paranormal publications. The fort’s combination of documented history, consistent witness reports, and photographic evidence make it one of the more credible haunted locations in the country.
“Fort Mifflin is not a place where you have to look for ghosts. They come to you. The drummer boy, the marching soldiers, the shadow figures — they are part of the fort’s fabric. They are the memory of what happened here.” — Fort Mifflin tour guide, 2020
What Do You Think?
Fort Mifflin is a place where history and the supernatural intersect with unusual clarity. The documented deaths of hundreds of soldiers during the 1777 siege and the Civil War provide a foundation of tragedy that, some believe, creates the conditions for hauntings. The consistency of witness reports — spanning decades and coming from visitors, staff, and professional investigators alike — lends credibility to the claims of paranormal activity.
Skeptics point to the fort’s age, its damp stone walls, and the power of suggestion as explanations for the reports. The sound of the wind through the fort’s corridors can mimic drumbeats and footsteps, and the play of light on old stone can create the illusion of figures. But the sheer volume of reports, and the consistency of specific details — the drummer boy, the marching soldiers, the cold prison cells — suggest something more than imagination.
Fort Mifflin is open for tours, overnight investigations, and special events. Whether you come for the history or the hauntings, the fort delivers on both. The ghosts march. The drummer plays. And the dead of the American Revolution refuse to be forgotten.
Summary
- Fort Mifflin was built in 1771 in Philadelphia — one of the first American-built military fortifications
- During the Revolutionary War, it held for six weeks against a devastating British siege in 1777
- Over 250 soldiers died during the siege, including the garrison commander Colonel Samuel Smith
- The fort later served as a Civil War prison, where additional deaths occurred
- The ghosts of soldiers — including a drummer boy and marching troops — are regularly reported
- Bottom line: Fort Mifflin is one of the most haunted Revolutionary War sites in America
See also: Gettysburg — Where the Civil War Dead Still March · The Tower of London — The Dead Still Walk Here