Rock Creek Park

Rock Creek Park was established by an act of Congress signed into law by President Benjamin Harrison on September 27, 1890. The main section of the park comprises 1754 acres. On the weekends the roads through the park are closed offering more paths for visitors to enjoy.

Things to do in the Park:

National zoo
Trails
Picnic
Horse center
Amphitheatre
Pierce Mill
Planetarium
Golf and more
https://www.nps.gov/rocr/index.htm

The park gained notoriety in 2001 with the disappearance of intern Chandra Levy.  She 24, was last seen in Washington on April 30, 2001 and her skeletal remains were found in the park May 2002.   See the timeline of events:
https://abcnews.go.com/Politics/story?id=121163&page=1

Support her cause for justice.
http://www.justiceforchandra.com/