The NVA Thai Center is hosting a weekly Sunday thai street food festival all summer (and autumn) long! 3 locations - Manassas, Ashburn, and Annandale, Virginia. We went to the Annandale one, which had plenty of parking (there is a large shopping center across the street too). 60 booths? Unsure about that but plenty of choices. There were also merchandise booths, with some handmade goods such as gold-plated jewelry! Best dishes: Green papaya salad (Lao and Thai style!), mussel & shrimp pancake, BBQ meat skewers, Pad Thai, Butterfly Pea Tea, Logan Juice, Mango Sticky Rice. Prices per-dish around $8-15. Make sure to bring a picnic blanket, and water!