Dulles Expo Center, located in the heart of Northern Virginia’s high-tech corridor, offers over 100,000 square feet of event space. Our new expansion adds 30,000 square feet to our existing space. The expansion also includes a new entrance, built-in box office, new energy efficient lighting, restroom upgrades, and 275 additional parking spaces. A new monument sign on Route 28 has been added featuring a LED panel highlighting the events held in the Dulles Expo Center.