Swing by Walney Visitor Center for some handy tips before you start exploring. It's an one-stop shop for travel information.
This tourist information center is located in Chantilly. If you're traveling on a budget, you'll be happy to hear it's free to visit. Once you've explored Walney Visitor Center, look up other attractions in the area. National Air and Space Museum Steven F. Udvar-Hazy Center, Manassas National Battlefield Park and Fair Oaks Mall are traveler favorites.