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Philadelphia, Pennsylvania · Built 1771; besieged 1777

Fort Mifflin

HauntedOpen to the public

Fort Mifflin · w:Seth Eastman, public domain

Facts below are drawn from the linked sources.

Real history

The fort was besieged by the British in 1777 (Wikipedia).

Ghost stories

These are reported legends, not verified events. The creepiness score (1–5) is Spook Atlas's own editorial rating, not a measurement.

Screaming woman, faceless man Our creepiness rating 💀💀💀💀💀
Billy Penn (Oct. 26, 2026) joined an overnight ghost hunt and recounts a "Ghost Hunters" episode about a screaming woman and a faceless man. Source: Billy Penn.

Then and now

Stone fort walls by the Delaware River
Now: Fort Mifflin. Photo: w:Seth Eastman, public domain. Wikimedia Commons

Public access

Open to the public Open March 1–December 15, Wednesday–Sunday 10 am–4 pm (Plan your visit). Last checked: Nov 1, 2026.

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⚠️ Please read: This information may be outdated and conditions change. Verify access with the owner or operator before you go. Spook Atlas does not encourage trespassing. Entering private, closed or condemned property can be illegal and dangerous. Report a correction.

Reader experiences

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