From Dulles Airport
Exit the airport heading east on the Dulles Expressway; after passing the Herndon exit, watch for a right hand exit to the parallel toll road, it is marked "to Reston Parkway, Wiehle Avenue, Hunter Mill Road" (NOTE: If you miss this exit, you will have to go about 10 miles to Tysons Corner to turn around and return.); Take the Fairfax County – Route 7100 exit; turn right on the Fairfax County Parkway moving to the left lane to turn left at first intersection (Sunrise Valley Drive); turn right at the third street into Sunrise Technology Park; proceed to middle of 2nd building on the left – 12345-G Sunrise Valley Drive and use "Studio" entrance.
From Reston Parkway
South of the Dulles Toll Road, turn west on Sunrise Valley Drive for about one mile; pass the main entrance to the United States Geological Survey (USGS) on the left; turn left at the second street on the left into Sunrise Technology Park; proceed to middle of 2nd building on the left – 12345-G Sunrise Valley Drive.