Fort Mifflin Hospital
Also known as: Old Fort Mifflin Mess Building
Why it's listed
Built before 1802, the two-storey brick building known as the mess building stands within the Fort Mifflin complex on the Delaware River in Philadelphia. It measures 40 by 110 feet, has a gabled roof, and has galleries along its east elevation. Its original double-hung window sash and window glass remain under the galleries on both floors. Four of these sash survive, and the form notes they are the only original double-hung sash in the entire fort complex. The building is regarded as part of the larger fort, whose military history spans the late eighteenth and nineteenth centuries. Its surviving original fabric, including the window glass, is the main reason it is significant, and its condition is recorded as deteriorated.
Significance in brief: The nomination identifies the building as part of the adjoining Fort Mifflin complex and refers to a separate attached sheet describing that complex. The form marks Military, Engineering and Historic areas of significance. The building retains original double-hung sash and window glass, which the form describes as the only such original sash in the fort complex.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 69000157, listed September 29, 1969. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence low).
Key facts
| Address | Marina and Penrose Ferry Rds., Philadelphia |
|---|---|
| County | Philadelphia |
| Listed | September 29, 1969 |
| Reference number | 69000157 |
| Resource type | Building |
| Areas of significance | Military, Engineering, Architecture |
| Level of significance | National |
| Status (as stated in the nomination) | Condition is marked Deteriorated; integrity is marked Original Site. |
| Within district | Fort Mifflin |
| Coordinates | 39.87622, -75.21129 (NPS GIS) |
What listing means for this property
For a publicly owned building or structure, listing mainly matters when federal funds, permits or licences are involved: projects then go through Section 106 review so effects on the property are considered. Listing also strengthens applications for preservation grants and, for leased income-producing uses, can enable the federal rehabilitation tax credit.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 69000157.
- Nomination form (PDF, National Archives) — catalog entry
- Wikidata Q139766837
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.