A rustic campground with mainly wooded sites best suited for tents, pop-ups, and small travel trailers. There are 16 grass pull-throughs with W/E/S hookups, fairly level and OK spacing (I think these are the only sites that can accommodate a 5th wheel or motorhome). The campground is part of a working cattle farm, acres of woods, couple of ponds, meandering stream - very peaceful. Convenient to Dulles Airport (Air and Space Museum); Manassas Civil War Battlefield is 8 miles south on 234, Wal-Mart and Camping World are a couple miles beyond that. If you appreciate 'old fashioned' camping then this is the park for you. (Camped here during off-season; rate is for full-hookup site.)
Campground is located within a beautiful county park in suburban Reston. We were there during off-season, so the small camp store and water park were not open. Be advised that while some of the sites looked pretty level, others (like ours) are very sloped - bring lots of blocks. There are no water or sewer hookups, but you can fill up on the side of the bath house before parking your rig. Restrooms were 'public park' quality, but very clean - lots of hot water. WiFi worked great. We tried public transportation to Washington one day - two buses and the metro - took at least two hours. Note that the rate is the maximum you would pay - off season and 15amp are a few dollars less.