Harmony Hall
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Harmony Hall at a glance
- Best time
- March–May, October–November
- Trip length
- Half day–2 days
- Don't miss
- Main Harmony Hall highlights — see Things to Do for current listings
- Nearby city
- Fort Washington, MD
Explore this park
About Harmony Hall
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 current NPS alerts
The National Park Service has no active alerts listed for Harmony Hall. Conditions change quickly — check again before you go.
Source: National Park Service (as of Oct 27, 2026). Official Harmony Hall page on nps.gov
Weather Information
- Summer
are generally hot and humid, with daytime highs frequently above 90 degrees Fahrenheit and scattered afternoon thunderstorms.
- Winter
are generally cold, with nighttime lows frequently near freezing and occasional snowfall.
Weather during spring and fall is generally moderate, but can change quickly..
Operating Hours
Harmony Hall Grounds
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.
- 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
Common questions
Planning Harmony Hall
The summary above covers timing and highlights. These go deeper on reservations, crowds, and logistics.
Reservation rules vary by season and activity for Harmony Hall. See Overview on this page for fees, timed entry, and campground details before you travel.
