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Learn and Explore
Since 1916, the National Park Service has been entrusted with the care of our national parks. With the help of volunteers and partners, we safeguard these special places and share their stories with more than 275 million visitors every year. But our work doesn’t stop there.
We are proud that tribes, local governments, nonprofit organizations, businesses, and individual citizens ask for our help in revitalizing their communities, preserving local history, celebrating local heritage, and creating close to home opportunities for kids and families to get outside, be active, and have fun.
Taking care of the national parks and helping Americans take care of their communities is a job we love, and we need—and welcome—your help and support.
Our Mission
The National Park Service preserves unimpaired the natural and cultural resources and values of the National Park System for the enjoyment, education, and inspiration of this and future generations. The Park Service cooperates with partners to extend the benefits of natural and cultural resource conservation and outdoor recreation throughout this country and the world.
Frequently Asked Questions
How do I obtain a park entrance pass?
Only 118 of your 417 park sites charge entrance fees. You can obtain park entrance passes by visiting a park site that charges an entrance fee. Entrance fee sites have passes available; we recommend calling a park prior to your visit. (See the park search to locate a specific park.) There are a number of entrance passes available, including park-specific passes as well as passes that offer entrance to more than 2,000 federal recreation sites in addition to the national parks (Annual, Military, Senior, 4th Grade, Access, and Volunteer passes). Learn more about the America the Beautiful – The National Parks and Federal Recreational Lands Pass.
About this location:
Operating Hours & Seasons
Harmony Hall Grounds
The grounds are open during daylight hours. The site has no parking however, parking is available next door at the Harmony Hall Regional Center.
Standard Hours
- Sunday: Sunrise – Sunset
- Monday: Sunrise – Sunset
- Tuesday: Sunrise – Sunset
- Wednesday: Sunrise – Sunset
- Thursday: Sunrise – Sunset
- Friday: Sunrise – Sunset
- Saturday: Sunrise – Sunset
Fees & Passes
Entrance Fees:
- $0.00 – Harmony Hall
There are no fees for the 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.
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.
Visitor Centers
Fort Washington Visitor Center
Harmony Hall does not have an active visitor center. For any questions or concerns please contact us at Fort Washington Visitor Center.
Weather
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..
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