Entry No. 39 — the New York City file — filed under: outdoor-weird
Renwick Smallpox Hospital Ruin
NYC's only landmarked ruin: a Gothic Revival stone hospital designed in 1856 by James Renwick Jr. (architect of St. Patrick's Cathedral) to isolate smallpox victims. Now a roofless shell of ivy-laced granite walls held up by scaffolding, fenced off but fully visible at the southern tip of Roosevelt Island. You reach it via the Roosevelt Island Tram gliding over the East River, then walk through Southpoint Park and FDR Four Freedoms Park to the ruin's edge.
The story
In the 1850s, when smallpox threatened to swamp Manhattan, the city took a simple approach: banish the sick to Blackwell’s Island (now Roosevelt Island) and surround them with water. To design the quarantine facility, they hired James Renwick Jr., the same architect behind Midtown’s St. Patrick’s Cathedral. Renwick drafted a Gothic Revival fortress, and inmates from the island's nearby penitentiary were put to work quarrying the local grey gneiss stone to build it. The hospital opened in 1856, keeping roughly 100 isolated patients tucked behind thick granite walls.
By the turn of the century, smallpox was waning and the building was converted into a nurses' dormitory before being abandoned completely around 1950. Decades of salt air, river breezes, and rain hollowed out the interior, leaving a roofless shell. In 1976, New York designated the structure as its first—and to this day, only—officially landmarked ruin. After a major section of the south wing collapsed in late 2007, steel bracing and scaffolding were retrofitted into the interior, turning the stone skeleton into an unsettling mix of 19th-century stonework and modern structural splints.
What it's like
To get there, take the Roosevelt Island Tramway from 59th Street and 2nd Avenue for a standard MTA fare, gliding right past the Queensboro Bridge over the East River. Head south along the waterfront path toward Southpoint Park. The ruin itself is completely fenced off behind heavy chain-link—you cannot step inside under any circumstances, but you can walk the entire perimeter. Go around golden hour or early evening when the floodlights switch on; the shadow-drenched Gothic window frames look particularly striking against the lit-up Midtown skyline directly across the river.
The move: Ride the aerial tram over the river, then walk to the fenced edge of the floodlit Gothic ruin at golden hour for an eerie, romantic backdrop.
📍 Before you go The ruin is fenced and viewable from outside only (no entry). Best reached via the Roosevelt Island Tram or F train; the adjacent FDR Four Freedoms Park has its own hours.
- 📍 Roosevelt Island, Manhattan
- 💸 Free
- ⚡ Up for anything
- 🌗 Outdoors
Where: Southpoint, Roosevelt Island, New York, NY 10044
Hours: Added 2026-06-23 — confirm current hours before you go.
Pair it with
- Creel and Gow — Match the dark, neo-Gothic medical history on the island with a quick hop back to Manhattan to visit a townhouse filled with high-end oddities, taxidermy, and minerals.
- Socrates Sculpture Park — Continue your waterfront exploration across the river in Astoria, where a former illegal riverbank dump was reclaimed into a sprawling outdoor art park.
- Spot (the Dalmatian and Taxi) — Follow the East River shoreline down to Kips Bay to contrast 19th-century granite medical ruins with a bizarre modern roadside sculpture outside a children's hospital.
Good to know
Can you go inside the ruin?
No. The interior is structurally unstable and permanently fenced off to protect visitors from falling masonry. Viewing is strictly from outside the perimeter fence.
How do you reach Roosevelt Island and the hospital?
You can take the Roosevelt Island Tram from 59th St/2nd Ave, ride the F train to Roosevelt Island station, or take the NYC Ferry (Astoria route). From the transit stops, it's about a 10-to-15-minute walk south.
Is there an admission fee to view the ruin?
No, viewing the exterior of the ruin from Southpoint Park is completely free and open to the public.
Can you see the ruin at night?
Yes, the building is fitted with floodlights that illuminate the stone exterior after dark, making it clearly visible from the surrounding park paths.
Plan a visit & invite your people →
Further reading: Wikipedia · rihs.us · forgotten-ny.com · Untapped Cities
last checked: 2026-06-23