DH and I will be traveling to the Northern Virginia/DC area next month with our 14 month old. For a whole slew of reasons, we'll be spending our weekdays in suburbia with a home base in Reston. Does anyone have any recommendations for fun places to take our semi-walking little guy?

We'll have a car and our LO can probably/hopefully handle car rides of 20 minutes or so. Playground, park, amazing library, cool indoor space, we're open to all of it. We're not very familiar with the area at all - everything is just a new name on a map to us at this point!

Thank you!!