# North Brother Island: Typhoid Mary's Prison, the Slocum Dead, and NYC's Most Forbidden Ruin
Thirteen acres. That's all that separates the Bronx from one of the most layered pieces of real estate in the United States. On a clear day, you can see it from the waterfront at Barretto Point Park: a dark smear of trees hulking in the East River, a few crumbling walls visible at the treeline, silent, patrolled, absolutely off-limits. Inside that forest is a collapsed hospital that once quarantined the sick of New York City, a bungalow where a woman lived as a prisoner for twenty-three years without ever committing a crime, and the ghost weight of more than a thousand people who drowned in sight of its shore. North Brother Island has been locked since 1963. It's not coming back. And that, somehow, makes it more present than ever.
The island sits between the Bronx's Hunts Point peninsula and Rikers Island, roughly equidistant from both, which gives it a certain grim geography. It's surrounded by what's arguably the most surveilled stretch of water in the five boroughs. Yet for most of the past six decades it has been watched over not by guards but by black-crowned night herons, the dense second-growth forest closing over its rooftops like water filling a wound.
What follows is the full history: the smallpox wards, the steamship fire that killed more New Yorkers in a single morning than any event before September 11, the Irish cook who became the first asymptomatic disease carrier in American medical history, the tuberculosis pavilion that was obsolete before it opened, the failed addiction rehab that ended the island's human use for good, and the sixty-year ecological afterlife that has followed.
Smallpox Hospital, 1885: The First Quarantine
The city of New York had a problem. The Lower East Side in the 1870s and 1880s was the most densely populated neighborhood on earth, a place where immigrant families from Southern and Eastern Europe and the Russian Pale shared tenement blocks so crowded that tuberculosis, typhoid, and smallpox moved through the population like weather. The answer, as far as the city's health department was concerned, was distance. Put the sick somewhere they couldn't touch anyone else.
Riverside Hospital had existed since the 1850s, operating first on Blackwell's Island (now Roosevelt Island) as a smallpox quarantine facility. By 1885, the city relocated its operation to a 13-acre spit of land in the East River that had no name worth speaking of, and began building. The North Brother Island) complex grew incrementally over the following decades: a main hospital building, a nurses' home, doctors' residences, a power plant, a morgue, a laundry, a caretaker's cottage, and eventually, in the 1910s, a small bungalow that would become the most famous address on the island.
Patients arrived by boat from the city docks, often against their will. Smallpox wasn't a negotiable diagnosis in Gilded Age New York, and the health department's enforcement powers were nearly absolute. The poor came in greatest numbers, partly because they were most exposed and partly because wealthier families had the resources to resist or evade mandatory hospitalization. The island's population swelled during outbreaks and shrank during quiet stretches, but Riverside Hospital never entirely emptied. It was a city within the city, a place where the unwanted were sent until they could be safely returned or quietly buried.
The original 1885 building still stands, in the loose sense of that phrase. Its masonry walls remain, but the floors have long since collapsed inward, and the forest has claimed the interior. Vines run through what were once wards. Trees grow out of window frames. The island holds roughly twenty-five original structures in various states of collapse, and on a still day, from the water, you can make out the profiles of several.
The General Slocum Disaster, June 15, 1904
No single event defines North Brother Island's trauma history more than what happened on the morning of June 15, 1904. The PS General Slocum was a paddle-wheel excursion steamboat, 264 feet long, chartered by St. Mark's Evangelical Lutheran Church for its annual Sunday school picnic. The passengers, approximately 1,358 in total, were overwhelmingly women and children from Kleindeutschland, the tight German immigrant community that occupied the blocks of Manhattan's Lower East Side around Tompkins Square Park. They boarded at the Third Street pier at 9 a.m. and headed up the East River toward Long Island Sound.
The fire started around 10 a.m. in a forward cabin, probably from a carelessly discarded match or cigarette near a storage room holding oil cans and hay. What happened next was a convergence of criminal negligence and plain bad luck. The fire hoses had rotted and burst under pressure. The lifeboats were wired to their davits, functionally inaccessible. The life preservers, stacked in their racks, had been stuffed with granulated cork and iron bars instead of proper flotation material: many of them sank the people who grabbed them. The crew panicked.
Captain William Van Schaick kept the boat at speed, reasoning that heading for shore was safer than stopping, but the wind fanned the flames faster than the boat moved. By the time he beached the burning hull off North Brother Island, roughly ten minutes after the fire started, the vessel was almost entirely consumed. Passengers jumped by the hundreds into the East River. The heavy wool clothing typical of the era, and the near-total inability of most passengers to swim, turned the river into a death trap. Some who couldn't swim clung to the burning railings until they fell. The lucky ones washed ashore.
Riverside Hospital staff and construction workers on the island formed human chains in the shallows and pulled survivors from the water. Between 200 and 350 people were saved that way. The death toll was 1,021, a number that stood as New York City's worst single-day loss of life until September 11, 2001. Bodies washed up on North Brother Island and on the Bronx shore for days afterward. The island's small morgue was overwhelmed. The hospital served as an emergency triage center for the burned and the drowned.
The aftermath shattered Kleindeutschland as a functioning community. The disaster had killed enough mothers, grandmothers, daughters, and children that the social fabric of the neighborhood tore. Within a few years, most of the remaining German families had relocated uptown or to the outer boroughs. The enclave that had persisted since the 1840s simply ceased to exist. The church building on East Seventh Street was eventually converted to a synagogue.
Van Schaick was convicted of criminal negligence and sentenced to ten years in prison, though President Taft pardoned him in 1912. The Knickerbocker Steamship Company, whose inspection failures had produced the rotted hoses and fraudulent life preservers, paid fines that were, by the standards of the catastrophe, laughably small.
Typhoid Mary's Bungalow: A 23-Year Quarantine
Mary Mallon was born on September 23, 1869, in Cookstown, County Tyrone, in what's now Northern Ireland. She emigrated to the United States around 1883 and settled in New York City, where she found work as a domestic cook. By the 1890s she had established a reputation as an excellent cook, working for wealthy households in Manhattan and Long Island at wages that placed her comfortably above most immigrant laborers.
She was healthy. She felt healthy. She never had typhoid fever, or at least never showed any symptoms of it. This was the problem.
In 1906, a wealthy banker named Charles Henry Warren rented a summer house in Oyster Bay, Long Island. Mallon cooked for the family that summer. Six of the eleven people in the household came down with typhoid. Warren hired a sanitary engineer named George Soper to investigate; Soper traced similar outbreaks through seven households where Mallon had worked, identifying twenty-two cases. His hypothesis: she was a healthy carrier, shedding typhoid bacteria through her stool and infecting food she prepared, unaware and apparently immune.
Mallon wasn't persuaded. When Soper approached her to request stool and urine samples, she drove him out with a kitchen fork. On March 20, 1907, New York City health inspector Sara Josephine Baker arrived with a police escort and found Mallon barricaded in a garden outbuilding. She was physically restrained, placed in an ambulance, and transported to Riverside Hospital on North Brother Island.
She hadn't been charged with any crime. She hadn't been convicted of anything. She was simply confined by administrative order because the health department deemed her a public health threat. She lived in a small cottage on the hospital grounds, could move freely around the island, received visitors, and was provided food and materials. Her stool samples continued to show typhoid bacteria. Her case attracted national press attention, and the tabloid nickname "Typhoid Mary" was coined by the New York American in June 1909, illustrated with a cartoon showing her dropping skulls into a frying pan.
She petitioned for her release repeatedly. In February 1910, Commissioner Ernst Lederle released her, on the conditions that she report to the health department quarterly and never work as a cook again. She agreed. She didn't keep the agreement. Within a few years she was cooking under the assumed name "Mary Brown," moving from household to household and leaving typhoid cases in her wake.
In early 1915, twenty-five cases of typhoid fever broke out at Sloane Maternity Hospital in Manhattan, killing two patients. Investigators identified the cook. Handwriting analysis matched "Mary Brown" to Mary Mallon. She was arrested and returned to North Brother Island, this time permanently.
She lived there for the remaining twenty-three years of her life. The arrangement wasn't entirely bleak: she worked as a laboratory assistant at the hospital from 1925 onward under physician Emma Rose Goldberg, sold baked goods and beaded jewelry to patients and staff, and received day passes into the city from 1918. She had friends on the island, and by most accounts she found a routine that was bearable if not free. On December 4, 1932, she suffered a severe stroke and became bedridden. She died on November 11, 1938, age sixty-nine. She was buried at Saint Raymond's Cemetery in the Bronx.
She had been connected to approximately 47 to 57 confirmed typhoid cases and three confirmed deaths. She was the first identified asymptomatic carrier of a bacterial disease in the United States. Whether she was treated justly is a question that public health historians still argue; the answer is almost certainly no, at least not consistently, and the fact that she was Irish, female, and working-class almost certainly shaped how the city exercised its authority over her.
Her bungalow stood on the island until the 1970s, when it collapsed. There's no marker on the site.
The Tuberculosis Pavilion: 1943 Modernist Architecture
The last significant building constructed on North Brother Island opened in 1943 and is, by most accounts, the finest piece of architecture on the island. The Tuberculosis Pavilion was built in the Art Moderne style, a stripped-down modernism that was then fashionable in civic architecture, featuring horizontal ribbon windows, smooth masonry facades, and a lobby with an interior balcony. The building ran to approximately 19,000 square feet across multiple wards designed for patients who needed sustained isolation and fresh air therapy, the standard TB treatment of the pre-antibiotic era.
The irony is that the pavilion barely functioned as intended. Streptomycin, the first effective antibiotic treatment for tuberculosis, was introduced in 1946, and by the late 1940s the rationale for sanatorium-style long-term isolation had largely collapsed. Patients who might have been sent to North Brother Island were increasingly treated in regular hospitals or outpatient settings. The TB Pavilion's wards never reached full capacity. Within a decade of opening, it was being repurposed.
Today the pavilion is the most photogenic ruin on the island. Its Art Moderne bones are intact enough to read against the forest: the ribbon windows now framing sky, the lobby floor buried under decades of leaf litter, the patient ward corridors where photographer Christopher Payne found a 1961 Bronx phone directory and a set of tuberculosis X-rays left behind when the building was abandoned. A door in one of the wards still shows names carved into the wood by patients. Nobody knows whose names they were.
The 1952-1963 Heroin Rehabilitation Failure
The final chapter of North Brother Island's operational life began in 1952, when New York City and the federal government opened what was presented as a pioneering alternative to incarceration for teenage heroin addicts. The postwar heroin epidemic, concentrated in Black and Latino neighborhoods in East Harlem, the South Bronx, and Bedford-Stuyvesant, had overwhelmed the city's existing responses. The island's isolation, which had made it useful for infectious disease quarantine, now made it attractive for a different kind of containment.
The program operated under the Riverside Hospital name and housed young addicts, some as young as sixteen, in involuntary commitment. The therapeutic model mixed education and vocational training with medically supervised withdrawal. In theory it was rehabilitation. In practice, the isolation that was supposed to protect patients from access to drugs also cut them off from family, community, and any support system that might have made sobriety sustainable.
The results were dismal by any measure. Recidivism rates were high. Former patients who returned to their neighborhoods found drugs as available as before and their social ties stretched thin by months of island confinement. Allegations of staff corruption and abuse circulated through the 1950s. Federal funding began to dry up as the program's failures became harder to argue away. The facility closed in 1963. The last staff left the island, the last boats stopped running, and North Brother Island reverted to what it has been ever since: a place that the city owns but doesn't use, visible from the highway, inaccessible by design.
Sixty-Three Years of Decay: From Hospital to Heron Sanctuary
In the year after the hospital closed, the trees began their counter-argument. North Brother Island had always had vegetation, but the grounds had been maintained; without human attention, the forest moved fast. Silver maples, ailanthus, and cottonwoods colonized the open spaces between buildings. Vines worked their way through window frames and into load-bearing walls. Roofs collapsed under the weight of accumulated water and plant growth, opening buildings to the elements and accelerating the decay from the inside.
By the early 1970s the island was jungle in all but name. By the 1980s it had become something genuinely wild.
In 1985, a colony of black-crowned night herons established nesting sites in the canopy. The species, a stocky wading bird with a sharp "quok" call and a preference for undisturbed habitat, found exactly what it needed: dense growth, no human disturbance, and proximity to the productive foraging waters of the East River and the Long Island Sound approach. The colony grew to become one of the largest in the metropolitan area, supporting hundreds of nesting pairs at its peak. By 2001, North Brother Island was officially designated part of the New York Harbor Heron Complex, a network of protected nesting sites managed across the harbor.
The herons have been less consistent in recent years; the colony's size fluctuated significantly through the 2000s and 2010s, with some seasons showing apparent abandonment and others showing recolonization. The reasons are unclear. What's certain is that the ecological value of the island, as a disturbed-free patch of habitat in the middle of the most urbanized estuary on the East Coast, is significant and has become the primary justification for maintaining its closed status.
The buildings continue their slow dissolution. Several structures from the original 1885 complex have partially collapsed. Others are structurally intact but inaccessible by vegetation. The TB Pavilion remains the most recognizable. The nurses' home, the power plant, and the caretaker's cottage can be identified from aerial photographs or from the water, read as geometries of masonry against the green.
Christopher Payne and the Photographic Reclamation
In 2008, architectural photographer Christopher Payne wrote a proposal to the New York City Department of Parks and Recreation requesting permission to document North Brother Island. The Parks Department granted it, with conditions: he could only visit between September and March, during the months when migratory birds weren't nesting. Each visit required an escorting parks staff member and a ten-minute boat ride from Barretto Point Park in the Bronx.
Over the next five years, Payne made dozens of trips, photographing the island across seasons, before and after Hurricane Sandy, in the heavy green of early fall and the bare-limbed clarity of February. He found artifacts scattered through the abandoned buildings: the phone directory, the X-rays, a 1930 grammar book, institutional furniture half-buried in leaf litter, the carved names on the ward door. He photographed the TB Pavilion's lobby with the light coming through collapsed sections of roof. He photographed the view from the shoreline where Slocum survivors were pulled from the water.
The resulting monograph, North Brother Island: The Last Unknown Place in New York City, was published by Fordham University Press in 2014 with an introduction by Robert Sullivan and an essay by preservation scholar Randall Mason. It's the most thorough visual record of the island in existence and, for most people, the closest they will ever get. Payne's photographs gave the island back to public consciousness; before his work, North Brother Island was a rumor, a name on old maps, something people glimpsed from the highway bridge. After, it was a specific, textured, deeply strange place that happened to exist in the middle of the largest city in the country.
Why You Can't Just Take a Boat There
North Brother Island is city property, administered by the NYC Parks Department under its Natural Areas Conservancy program. Visiting without authorization is trespassing. The island is actively monitored: NYPD Harbor Patrol runs regular passes through the East River, and the Parks Department isn't casual about enforcement. People have been arrested for attempting unauthorized landings.
The airspace restriction adds another layer. The island sits within the Class B airspace of LaGuardia Airport and within range of the FAA-controlled approach corridors for both LaGuardia and JFK. Flying a drone over North Brother Island without explicit FAA authorization and NYC Parks permission is a federal violation, not merely a local ordinance issue. Several drone operators have been prosecuted or received cease-and-desist contact after footage appeared online.
Permits for authorized visits exist but are rare and specific. They're issued by the Parks Department primarily to researchers with demonstrable scientific purposes, ornithologists studying the heron colony, ecologists monitoring invasive species, and occasionally journalists and documentary filmmakers. Each permitted visit requires escort by a Parks staff member. The processing time is long and approval isn't guaranteed.
The urbex calculus here is significantly different from, say, an abandoned mall in a rust-belt city. The East River crossing requires a boat. The island is visible from multiple surveillance positions. The arrest record is real. And the legal consequences fall under New York State criminal trespass statutes, which carry potential jail time rather than just a fine. The risk-to-reward ratio, for anyone thinking clearly, points strongly toward the legal options described below.
Paranormal Reports: The Slocum Dead and Mary's Whisper
North Brother Island doesn't need embellishment, but it has accumulated a folklore anyway, and that folklore isn't entirely ridiculous given the specific density of catastrophe packed into thirteen acres.
The Slocum disaster produces the most credible-sounding paranormal reports, if "credible" is a word that applies here. Researchers granted access to the island have described audio phenomena near the shoreline, specific clusters of sound near the water's edge that resist easy explanation. Whether this reflects real acoustic phenomena produced by the tidal geography of the East River, or projection by people who know what happened there, or something else entirely, is unanswerable. What's certain is that the bodies of the Slocum dead did wash up on this shore, and the hospital staff who worked there in June 1904 spent days pulling corpses from the water. The weight of that specific history is embedded in the place in ways that are not strictly supernatural but are not nothing, either.
Mary Mallon's presence in the folklore is more specific: a female figure reported in the area of her former cottage, described variously as a shadow moving between the trees or a shape visible through windows of the hospital building where she worked. These reports come almost entirely from people who visited the island without permits, which limits their evidential value considerably. The cottage itself collapsed decades ago. The laboratory building where she spent her later years is a ruin.
The island's ghost tour presence on sites like NY Ghosts leans heavily on the combination of Mallon and Slocum as an irresistible paranormal double feature. The stories are probably more revealing about how Americans process historical trauma than about anything that happens on the island at night.
How to Legally See North Brother Island in 2026
The closest you can get without a permit is the waterfront at Barretto Point Park in the Bronx, at the foot of Tiffany Street. On a clear day the island is clearly visible from the shoreline, roughly a quarter mile across the water. This is where Christopher Payne launched his permitted boats, and from this vantage you can make out the roofline of the TB Pavilion and the mass of trees above the original hospital structure.
The East River Ferry doesn't pass directly alongside, but the NYC Ferry Soundview route on the Bronx side offers views across the channel that are worth taking. The Atlas Obscura page on North Brother Island has good notes on viewing angles.
Kayaking from City Island, roughly three miles north, is legally permitted up to the point where you would land on North Brother Island itself. The hundred-foot offshore limit isn't a hard rule under maritime law, but landing constitutes trespass. Paddling in the surrounding water while keeping distance from shore is legal and gives a different perspective on the island than any shoreside viewpoint.
The definitive proxy remains Christopher Payne's book, which is in print and widely available. His photographs give you the interior that no legal visit will provide: the TB Pavilion lobby, the collapsed wards, the artifacts in the leaf litter, the quality of winter light in a building that hasn't had heat for sixty years.
FAQ
Can I visit North Brother Island? No. The island is closed to the public and administered by the NYC Parks Department as a wildlife sanctuary. Unauthorized access is criminal trespass under New York State law, enforceable by NYPD Harbor Patrol. Permitted access exists for researchers and journalists but requires an application, a demonstrated scientific or journalistic purpose, and Parks staff escort on every visit.
What buildings are still standing? Approximately twenty of the original twenty-five structures remain in some form, ranging from substantially intact (the TB Pavilion walls and lobby) to partial ruins (the original 1885 hospital building, the nurses' home, the power plant). All are in advanced states of structural decay and none are safe to enter.
Is Mary Mallon's bungalow still there? No. The small cottage where she lived during her first quarantine (1907-1910) and where she spent time during her second confinement collapsed in the 1970s. No physical trace of it remains identifiable today.
Who owns North Brother Island? The City of New York, administered through the NYC Parks Department under its Natural Areas Conservancy program. It's formally designated as part of the New York Harbor Heron Complex, a network of protected nesting sites for colonial waterbirds.
Will it ever open to the public? Almost certainly not in its current form. The combined constraints of structural instability, active heron nesting, and the absence of any access infrastructure (no functioning dock, no utilities) make public access impractical without major investment. There has been occasional discussion of limited guided tours by kayak, but nothing has materialized. The Parks Department's position is that the ecological value of the island depends on its inaccessibility.
Conclusion: The City's Buried Secret
New York City has an unusual relationship with its disasters. It processes them at scale, narrativizes them quickly, and then builds over the sites until the physical evidence is gone. The General Slocum fire barely registers in contemporary tourist consciousness; there's no memorial at the Third Street pier, no museum at the site where the bodies washed ashore. Mary Mallon's grave in the Bronx receives occasional visitors but no official recognition of the specific injustices of her case.
North Brother Island escapes this erasure only by accident. It's too awkward to develop, too sensitive to open, too legally complicated to hand over to a private operator, and too ecologically valuable to demolish. So it persists, a thirteen-acre archive of everything the city would rather not look at directly, visible from the BQE, unmistakable on satellite imagery, impossible to visit.
The herons that have claimed it are not a symbol. They're birds nesting in the only place in the harbor that nobody can disturb them. But the fact that a wildlife refuge has established itself in the ruins of a hospital that quarantined the sick, the addicted, and the unwanted is the kind of unironic irony that only a city with New York's specific history could produce.
If you want to go deeper into America's most haunted and abandoned landscapes, see our full guide to abandoned and haunted places across the USA. And to explore this spot and hundreds of others on an interactive map, visit our urbex map.
