27 National Park Service sites
Maryland park guides
45 campgrounds inside the parks · 289 nearby · 29 free sites45 campgrounds inside the parks · 289 nearby · 29 free and dispersed sites
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National Historical Park4 alerts
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At a glance
Inside the parks45 campgroundsAt 5 sites
Near the parks289 campgroundsWithin 25–50 mi of a site
Free and dispersed29 sitesWithin 25–50 mi of a site
Current alerts29 at 14 sitesAs of Sep 20, 2026 · nps.gov
Park guides in Maryland 27
National Historical Park4 alertsChesapeake & Ohio Canal National Historical ParkPreserving America's early transportation history, the C&O Canal began as a dream of passage to Western wealth. Operating for nearly 100 years the canal was a lifeline for communities along the Potomac River as coal, lumber, and agricultural products floated down the waterway to market. Today it endures as a pathway for discovering historical, natural, and recreational treasures.37 in the park · 30 within 25 mi · 6 free nearbyEntrance $20 per vehicle
4 alertsEntrance $20 per vehicle
ParkCatoctin Mountain ParkPresident Franklin D. Roosevelt created programs to give people a chance to rebuild their lives from the Great Depression. The Works Progress Administration and the Civilian Conservation Corps gave this land a second opportunity and through re-growth, a new role as a recreation area.5 in the park · 83 within 25 mi · 6 free nearby1 alert
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National BattlefieldAntietam National Battlefield23,000 soldiers were killed, wounded or missing after twelve hours of savage combat on September 17, 1862. The Battle of Antietam ended the Confederate Army of Northern Virginia's first invasion into the North and led Abraham Lincoln to issue the preliminary Emancipation Proclamation.1 in the park · 71 within 25 mi · 10 free nearby1 alertEntrance $20 per vehicle
1 alertEntrance $20 per vehicle
National SeashoreAssateague Island National SeashoreWant to live on the edge? Visit a place recreated each day by ocean wind and waves. Life on Assateague Island has adapted to an existence on the move. Explore sandy beaches, salt marshes, maritime forests and coastal bays. Rest, relax, recreate and enjoy some time on the edge of the continent.1 in the park · 61 within 50 mi · 5 free nearby1 alertEntrance $25 per vehicle
1 alertEntrance $25 per vehicle
ParkGreenbelt ParkEnjoy affordable camping, hiking, and peaceful forest surroundings just ten miles from Washington, DC!1 in the park · 45 within 25 mi · 1 free nearby1 alert
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ParkPiscataway ParkPiscataway Park is home to bald eagles, beavers, deer, foxes, ospreys, and many other species. To complement the surroundings, the park has, in addition to a public fishing pier and two boardwalks over fresh water tidal wetlands, a variety of nature trails, meadows, and woodland areas. The Park is also home to National Colonial Farm.64 within 25 mi · 7 free nearby2 alerts
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ParkFort Foote ParkFort Foote was constructed in 1863 atop Rozier's Bluff to strengthen the ring of fortifications that encircled Washington, D.C. Two of the Guns that protected Washington are still there along with the remains of the fort's earthworks.63 within 25 mi · 4 free nearby
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National BattlefieldMonocacy National BattlefieldDuring the summer of 1864, the Confederacy carried out a bold plan to turn the tide of the Civil War in their favor. They planned to capture Washington, DC and influence the election of 1864. On July 9, however, Federal soldiers outnumbered three to one, fought gallantly along the banks of the Monocacy River in an effort to buy time for Union reinforcement to arrive in Washington, DC.63 within 25 mi · 11 free nearby
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ParkFort Washington ParkBuilt to defend the river approach to Washington, DC, Fort Washington has stood sentry for over 200 years. As technologies advanced, so did Fort Washington from the brick and stone of the 19th century to the concrete and steel of the 20th century.62 within 25 mi · 6 free nearby2 alerts
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National Historical ParkHarpers Ferry National Historical ParkAt the confluence of the Shenandoah and Potomac rivers, on the ancestral home of the Tuscarora and Shawnee people, lies Harpers Ferry. Here you can explore John Brown's Raid against slavery. Find your connection to the struggle for freedom, education, and civil rights at Storer College. Discover miles of trail in the Blue Ridge and along Civil War battlefields.62 within 25 mi · 13 free nearby2 alertsEntrance $20 per vehicle
2 alertsEntrance $20 per vehicle
Harmony HallThe 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.56 within 25 mi · 2 free nearby
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National Historic SiteThomas Stone National Historic SiteIn 1776, Thomas Stone and 55 others signed the Declaration of Independence. In doing so, Stone risked his home, his family's security, and even his life to support the Declaration of Independence's promise of freedom.52 within 25 mi · 7 free nearby
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Photos: NPS · NPS Photo/Peggie Gaul · NPS Antietam/BBaracz · NPS Photo · NPS/G Wilson · NPS photo · NPS / Rachel Hendrix · NPS Photo/Shenandoah Sanchez · NPS Photo / Stephen Girimont
Trails crossing Maryland 5
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Park information, alerts and photos: National Park Service.