Fort Mifflin

Fort Mifflin, originally called Fort Island Battery and also known as Mud Island Fort, was commissioned in 1771 and sits on Mud Island (or Deep Water Island) on the Delaware River below Philadelphia, Pennsylvania near Philadelphia International Airport.

During the American Revolutionary War, the British Army bombarded and captured the fort as part of their conquest of Philadelphia in autumn 1777. In 1795, the fort was renamed for Thomas Mifflin, a Continental Army officer and the first post-independence Pennsylvania governor.

The U.S. Army began rebuilding the fort in 1794, and continued to garrison and build on the site into the 19th century. Fort Mifflin housed prisoners during the American Civil War. The U.S. Army decommissioned Fort Mifflin for active duty infantry and artillery in 1962.

While the older portion of the fort was returned to the City of Philadelphia, a portion of the fort's grounds are still actively used by the U.S. Army Corps of Engineers, making it the oldest fort in use by the U.S. military. Historic preservationists have restored the fort, which has been named a National Historic Landmark.

Text adapted from “Fort Mifflin” on Wikipedia, CC BY-SA 4.0.

Fort Mifflin ranks #3,305 of 8,134 worldwide in the atlas's castle fame ranking, and #64 of the 103 mapped in United States. Founded 1771, it is older than 15% of the atlas's dated landmarks — one of 556 atlas entries founded in the 18th century. Its Wikipedia articles were opened 3,586 times in the last 60 days, more than 79% of the atlas. See how United States compares in the castle statistics.

View on the interactive castle map →

Read the full history on Wikipedia ↗