
Maryland
Tonight
🌗 46% moon
6.6 h fully dark
Open today
Open
Entrance
Free entry
The 18th century Harmony Hall mansion is located on a 62.5-acre open pasture land estate along the Potomac River. This estate was purchased by the National Park Service in 1966, to preserve southern Maryland cultural heritage. Surrounded by a rich landscape, it offers visitors many chances to connect with Colonial History. The park also home to the remains of the Want Water House and canal.
No entrance fee.
Park grounds are open daily from 6:00 a.m. to 10:00 p.m. There is no vehicle access or on-site parking. Historic structures are closed, and no facilities or amenities are available. Please do not attempt to enter any structures.
Generally open:
winterspringsummerfallHours are reported by the park — verify before you go.
📞 771-208-1555
✉ haha_visitorservices@nps.govWeather now: ⛅ Partly cloudy, 90°F
🌦️ 90°/77°
🌦️ 93°/74°
🌦️ 98°/72°
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Junior Ranger Programs at National Capital Parks - East
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2 audio-described place(s)
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Harmony Hall
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Southern Maryland National Heritage Area

Want Water Ruins
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Memorials for the Future, is a competition that aims to rethink the way we develop and experience memorials in Washington, D.C.
National Capital Parks - East is hopping! Learn what recent amphibian monitoring data shows us about amphibian populations in the park!
Learn about current and projected rates of sea level rise in the greater DC area, based on local water level data collected by the National Oceanic and Atmospheric Administration (NOAA)
Broad Creek straddled two worlds in the 1600s: that of the Piscataway people, for whom the land likely constituted important hunting and fishing grounds, and that of the European colonists who settled it starting in 1634. While the Broad Creek community prospered as an Atlantic port city before collapsing due to the American Revolutionary War, one estate—and Harmony Hall, the stately red-brick Georgian manor house that renamed it—weathered it all.
To steward amphibians effectively, managers need basic information about which species live in parks. But species lists need constant maintenance to remain accurate. Due to recent efforts, the National Park Service now has an up-to-date amphibian species checklist for almost 300 parks. This information can serve as the basis for innumerable conservation efforts across the nation.
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