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 Hist
Free — you won’t need your pass here.
Free entry — there is no entrance fee here, so you won’t need your pass to get in.
- Fee type No fee — No fee is charged here.
- HoursPark 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 str
- Source National Park Service ↗
- Last verifiedJuly 6, 2026 · Confirmed
- Official pagewww.nps.gov ↗
- Contact 771-208-1555 · haha_visitorservices@nps.gov
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 p
Common questions
Quick Yes / No / Depends answers for Harmony Hall — always confirm with the managing site before you go.
No Is there a fee at Harmony Hall?
No — it’s free to enter, so you won’t need your pass to get in.
Yes Can you kayak, paddle, or boat here?
Yes — there’s water for boating and paddling at Harmony Hall. Hand-launched craft usually need no permit; motorized boats may need registration or a launch fee.
Yes Are there hiking trails?
Yes — trails here include Harmony Hall Trail. Check length and difficulty before you go.
Yes Can you watch wildlife or birds here?
Yes — Harmony Hall is a spot for wildlife and bird watching. Keep your distance and never feed animals.
Depends Can you bring a dog?
Usually only leashed and in developed areas, campgrounds, and paved paths — not on most trails or in buildings. Pet rules vary by park, so check first.
No Are drones allowed?
No — launching, landing, or operating drones is prohibited on National Park Service land.
Yes What are the 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. Please do not attempt to enter any str
Nearby sites
NPS / Rachel Hendrix National Park Service Fort Foote Park
ConfirmedFree entry — there is no entrance fee here, so you won’t need your pass to get in.
NPS Photo National Park Service Fort Washington Park
ConfirmedFree entry — there is no entrance fee here, so you won’t need your pass to get in.
