Maryland National Park Units

Name

Classification

Date*

Hectares

Acres

Features

Antietam	National Battlefield	1890	1,366	3,377	Battlefield where Union forces repulsed the first attempt to invade the North by Confederate General Robert E. Lee
Appalachian	National Scenic Trail	1968	86,730	222,175	Scenic trail 3,473 km (2,158 mi) long following the Appalachian Mountains from Maine to Georgia
Assateague Island	National Seashore	1965	16,080	39,733	Barrier island containing Chincoteague National Wildlife Refuge; wild ponies and migratory waterfowl (Also in Virginia)
Catoctin Mountain Park	Undesignated	1936	2,351	5,810	Forested ridge forming the eastern rampart of the Appalachian Mountains in Maryland
Chesapeake and Ohio Canal	National Historical Park	1938	7,913	19,553	Early 19th-century canal along the Potomac River (Portions also in District of Columbia and West Virginia)
Clara Barton	National Historic Site	1974	3.5	8.6	Home of the founder of, and former headquarters for, the American Red Cross
Fort McHenry	National Monument	1925	18	43	Site of battle (1814) that inspired Francis Scott Key to write 'The Star Spangled Banner'
Fort Washington Park	Undesignated	1930	138	341	Early 19th-century fort across the Potomac from Mount Vernon; built to protect the nation's capital
George Washington Memorial Parkway	National Parkway	1930	2,966	7,328	Preserves natural scenery along the Potomac River; links historic sites associated with first president's life (Also in Virginia and District of Columbia)
Greenbelt Park	Undesignated	1950	476	1,176	Woodland park with outdoor recreation opportunities located near Washington, D.C.
Hampton	National Historic Site	1948	25	62	Fine late 18th-century Georgian mansion
Harpers Ferry	National Historical Park	1944	1,013	2,503	Strategically located town at confluence of Shenandoah and Potomac rivers; site of raid (1859) by abolitionist John Brown (Portions of park also in West Virginia and Virginia)
Monocacy	National Battlefield	1934	667	1,647	Civil War battle site during defense of Washington, D.C. (1864)
Piscataway Park	Undesignated	1961	1,872	4,627	Preserves the view from Mount Vernon of the Maryland shore of the Potomac
Potomac Heritage	National Scenic Trail	1983	not set	not set	Trail when completed to connect the tidewater regions along the Potomac River to the Laurel highlands of Pennsylvania
Thomas Stone	National Historic Site	1978	133	328	The 18th-century Georgian mansion home of Thomas Stone, a signer of the Declaration of Independence
* Earliest date of federal government involvement with the area.