vans nixed the skatepark at potomac mills, as well as all their outlet stores here... I was pissed because I love vans shoes
Leesburg isn't that far from Herndon. Try Catoctin Skate park if it's still around.
http://www.skateboardparks.com/virginia/catoctin/index.html
in herndon, a lot of kids would create elaborate skate parks from plywood/etc. in the woods in local neighborhoods, when I was living there growing up. They would find a clearing and get some hammers and nails and go to town. The local ARC would then come and tear the thing down, the skatenigs would build another somewhere else or in the same place. And the cycle continued until at least when I was in HS in the mid-90's.