Capitol Hill Parks is an umbrella term for the National Park Service

National Park Service

The National Park Service is the U.S. federal agency that manages all national parks, many national monuments, and other conservation and historical properties with various title designations...

 management of a variety of urban parks in Washington, D.C.

Washington, D.C.

Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. On July 16, 1790, the United States Congress approved the creation of a permanent national capital as permitted by the U.S. Constitution....

There are four key parks in the system:

• Folger Park
  Folger Park
  Folger Park is a public park named after former Secretary of the Treasury Charles J. Folger. It is located at 2nd Street and D Street, Southeast, Washington, D.C., in the Capitol Hill neighborhood....
  
  , named after former Secretary of the Treasury Charles J. Folger
  Charles J. Folger
  Charles James Folger was an American lawyer and politician. He was U.S. Secretary of the Treasury from 1881 until his death.-Early life:...
  
  ;
• Lincoln Park, named after the sixteenth president, and by far the largest unit at 7 acres (28,328 m²);
• Marion Park
  Marion Park
  Marion Park is a public park named after Revolutionary War leader Francis Marion.It is located at 4th Street, 6th Street, and E Street, Southeast, Washington, D.C., in the Capitol Hill neighborhood.A Large Hilton Iron Vase was removed in 1963...
  
  , named after Revolutionary War leader Francis Marion
  Francis Marion
  Francis Marion was a military officer who served in the American Revolutionary War. Acting with Continental Army and South Carolina militia commissions, he was a persistent adversary of the British in their occupation of South Carolina in 1780 and 1781, even after the Continental Army was driven...
  
  ;
• Stanton Park, named for Lincoln's Secretary of War, Edwin Stanton.

Additionally, a variety of smaller greenspaces are under the authority of this NPS area. The 59 circles and triangles included in Pierre L'Enfant's design of the city are overseen as part of this jurisdiction.