Harmony Hall is an 18th century mansion is located on a 62.5-acre open pasture land estate along the Potomac River in Prince George’s County, Maryland. This estate was purchased by the National Park Service in 1966, in hopes of preserving the decades of southern Maryland cultural heritage represented here.
The mansion is not open to the public, however the grounds can be walked. Parking is located at the Harmony Hall Regional Center located adjacent to the park.
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Last updated: May 10, 2020