There's a fountain at the Reston town center near Arlington. Kids aren't supposed to play in it, according to the sign, but they really shouldn't have made it so tempting. Claire and two older girls were chasing fountain spouts when we were out there last weekend. Claire got soaked, but loved it! (until she fell and skinned her knee, then we dried her off, changed her and had a good mexican lunch...a skinned knee tends to be our natural ending to most things).