national dog pet policy info.

Harmony Hall

Located in the state of Maryland

Harmony Hall, located in Fort Washington, Maryland, is managed by the United States National Park Service as part of the National Capital Parks-East system. It has been a National Park Service site since 1966. Harmony Hall is a 2.5 story Georgian country house built of red brick during the eighteenth century. It is surrounded by 65 acres of land on Broad Creek, a Potomac River tributary.

  • Pets are allowed on all exterior areas
  • Parking areas and along paved roads
  • Must be restrained or kept on a leash no longer than 6 feet at all times.
  • Dogs must wear a collar with current tags at all times
  • Pick up after your dog at all times – Leave no trace

*Please see more details for leash info

  • Inside buildings (unless service animal)
  • Never leave your pet unattended or alone inside a vehicle
  • Never off leash – unless inside a vehicle, tent, dog crate or other portable kennel
  • Untagged dogs or dogs with uncurrent tags
  • Excessive barking

*Please see more details for leash info

  • Extreme range of weather
  • Ticks and biting insects
  • Do not drink from waterways
  • Bring plenty of drinking water

Leash Laws: Most parks require dogs to be on a leash in some or all areas, however, some parks allow dogs off leash in certain locations, please consult the parks website before going off leash, Thank you!

  • Consult the park website before traveling all information is to be used as a guide.
  • Respect local wildlife.
  • Leave no trace – What you bring in, you bring out.
  • If you are visiting during the hottest months of the year, a “palm test” is recommended before walking your dog – place your hand on the pavement for a minute and see if it is comfortable there. If the pavement feels hot to your palm, it will be hot to your dog’s paws.

(301) 763-4600

Harmony Hall Website

Harmony Hall Hiking

Harmony Hall Volunteer

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We do our best to keep all information current and accurate - If you see an error or think we have missed something please contact us directly.

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