National Park Service site

Harmony Hall

Harmony Hall is a National Park Service site in Maryland. The NPS currently lists 0 active alerts, 0 campgrounds and 0 visitor centers, and no entrance fee.

Maryland No entrance fee

Updated · NPS Data API

Flowers on a tree with a large brick house in the background.
Harmony Hall · Photo: NPS (via nps.gov)

About the park

“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.”

Active alerts

0

Closures

0

Campgrounds

0

Visitor centers

0

Current alerts and closures

The NPS listed no active alerts for this park in the Oct 28, 2026 snapshot. Conditions can change; check current conditions on nps.gov before you go.

Entrance fees and passes

This site has no entrance fee, according to NPS fee data.

Things to do

Activities the NPS lists for Harmony Hall.

Wildlife WatchingBirdwatching

Operating hours

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.

Harmony Hall Grounds
DayHours
Monday6:00AM - 10:00PM
Tuesday6:00AM - 10:00PM
Wednesday6:00AM - 10:00PM
Thursday6:00AM - 10:00PM
Friday6:00AM - 10:00PM
Saturday6:00AM - 10:00PM
Sunday6:00AM - 10:00PM

Weather: Summers are generally hot and humid, with daytime highs frequently above 90 degrees Fahrenheit and scattered afternoon thunderstorms.

Contact and directions

Phone
771-208-1555
Email
[email protected]
Address
10702 Livingston Road, Fort Washington, MD 20744
Coordinates
38.7465, -77.0038· View on OpenStreetMap

Official park page on nps.gov Directions

Visitor centers

No visitor centers are listed for this site in the NPS data.

Campgrounds

No NPS campgrounds are listed for this site. Nearby national forests or state parks may offer camping.

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More parks in Maryland

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Nearest other NPS sites

Sources

  • Park details, alerts, fees and passes, visitor centers and campgrounds: National Park Service Data API, snapshot of Oct 28, 2026.
  • Official park page: https://www.nps.gov/haha/index.htm
  • Data: National Park Service (NPS) Data API, U.S. Department of the Interior (developer.nps.gov). This product uses the NPS Data API but is not endorsed or certified by the National Park Service. The National Park Service and the U.S. Department of the Interior do not endorse OpenParks. Photos are NPS images shown with their original credits; park descriptions are short excerpts credited to the NPS. Always confirm current conditions on nps.gov before you travel.