📘 Park Overview
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.
🌤 Weather Information
Summers are generally hot and humid, with daytime highs frequently above 90 degrees Fahrenheit and scattered afternoon thunderstorms. Winters are generally cold, with nighttime lows frequently near freezing and occasional snowfall. Weather during spring and fall is generally moderate, but can change quickly..
🚗 Directions
From the Capital Beltway (I495/95) take Exit 3 to MD 210 South/Indian Head Highway, travel approximately 4 miles to Fort Washington Road, turn right. At the traffic light, Livingston Road, turn right. The Harmony Hall Regional Center will be on your left. That is where you will need to park. After parking, when facing Livingston Road, go to your left and the park entrance is the next driveway.
Images
Harmony Hall is a two and a half story Georgian style house built in 1723.
Credit: NPS
Historic image of Harmony Hall, circa 1938.
Credit: NPS Photo
Broad Creek runs through the Harmony Hall property
Credit: NPS
East elevation of Harmony Hall Mansion
Credit: NPS Photo
The ruins of Want Water, a colonial era home
Credit: NPS
The view from the backyard of Harmony Hall
Credit: NPS
Activities
Topics
Operating Hours
Entrance Fees
No entrance fees listed.
Entrance Passes
No entrance passes listed.
3-Day Weather Forecast
Thursday, Jun 11
Sunny
High: 103.3°F | Low: 72.5°F
Humidity: 66%
Wind: 8.1 mph
Rain Chance: 5%
UV Index: 9
Sunrise: 05:42 AM
Sunset: 08:32 PM
Moon: Waning Crescent (8%)
Visibility: 3 mi
Dew Point: 79.7°F
Cloud Cover: 5%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Friday, Jun 12
Moderate rain
High: 95.7°F | Low: 67.8°F
Humidity: 73%
Wind: 9.6 mph
Rain Chance: 66%
UV Index: 9.6
Sunrise: 05:42 AM
Sunset: 08:33 PM
Moon: New Moon (3%)
Visibility: 5 mi
Dew Point: 74.3°F
Cloud Cover: 66%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Saturday, Jun 13
Sunny
High: 86.3°F | Low: 62°F
Humidity: 58%
Wind: 8.1 mph
Rain Chance: 3%
UV Index: 9.8
Sunrise: 05:42 AM
Sunset: 08:33 PM
Moon: New Moon (1%)
Visibility: 6 mi
Dew Point: 65.9°F
Cloud Cover: 3%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Weather Alerts (4)
Heat Advisory issued June 11 at 10:29AM EDT until June 11 at 8:00PM EDT by NWS Baltimore MD/Washington DC
Effective: Jun 11, 2026 10:29am
Expires: Jun 11, 2026 6:30pm
* WHAT...Heat index values up to 105 expected.
* WHERE...Areas near and east of the Interstate 95 corridor from
northeast to southern Maryland and the northern neck of Virginia,
including Baltimore MD and Washington DC.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Effective: Jun 11, 2026 2:28pm
Expires: Jun 11, 2026 2:38pm
Monitoring message only. Please disregard.
Heat Advisory issued June 11 at 2:23AM EDT until June 11 at 8:00PM EDT by NWS Wakefield VA
Effective: Jun 11, 2026 2:23am
Expires: Jun 11, 2026 8:00pm
* WHAT...Heat index values up to 106 expected.
* WHERE...Eastern Essex, Richmond, Westmoreland, Mathews, and
Northumberland Counties.
* WHEN...From 11 AM this morning to 8 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Heat Advisory issued June 11 at 2:23PM EDT until June 11 at 8:00PM EDT by NWS Wakefield VA
Effective: Jun 11, 2026 2:23pm
Expires: Jun 11, 2026 10:30pm
* WHAT...For the first Heat Advisory, heat index values up to 105.
For the second Heat Advisory, heat index values up to 106 expected.
* WHERE...Portions of east central, eastern, and southeast Virginia.
* WHEN...For the first Heat Advisory, until 8 PM EDT this evening.
For the second Heat Advisory, from 11 AM to 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Park Alerts
Visitor Center & Contacts
📍 Physical Address:
10702 Livingston Road
Fort Washington, MD 20744
🏤 Mailing Address:
Fort Washington Park
Attn: Harmony Hall
Fort Washington, MD 20744
📞 Voice Phone: 771-208-1555
✉️ Email: haha_visitorservices@nps.gov