Glencarlyn Park 
301 South Harrison St.
Arlington, VA 22204
703-228-3000
http://parks.arlingtonva.us/locations/glencarlyn-park/
Park: Fish, Hike, Picnic, Playground, Walk
This beautiful and secluded 95.5 acre park offers a whole host of family activities. From picnic shelters (2), to fishing, nature trails, connections to Four Mile Run and W&OD trails, a playground, an amphitheater, dog park and Long Branch Nature Center. This park has it all. Find out if your dog should play in the stream by visiting the website.