Shirlington Park 
2601 South Arlington Mill Drive
Arlington, VA 22206
703-228-3000
http://parks.arlingtonva.us/locations/shirlington-park/
Park: Hike, Picnic, Walk
Enjoy this sprawling 29-acre park featuring drinking fountains, a stream, a path with benches staggered alongside, and a dog park. Shirlington Park was named best dog park of 2009 by Washington Express. See website to learn if your dog can safely play in the stream.