Sterling is in Loudoun County Virginia, within the United States of America.About 30 minutes NW of Washington, D.C., except during rush hour.
How to get there ?
Virginia State Route 7 runs through Sterling. Sterling can also be reached from Interstate Route 66 by taking the Rt. 28, Sully Road exit North. Rt. 28 leads to Rt. 7, thence east to Sterling.
Dulles International Airport, (IATA: IAD). Located partially in Sterling, Dulles International Airport is a hub of United, and offers service to many national and international destinations. Access, via major thruway, is best along Rt. 28 (Sully Road) and Rt. 267 (toll road), or the Dulles Access Rd. Currently, no there is no rail service to this area, though a new MetroRail line is projected to open in 2018 within the general vicinity, and the airport can be reached from L'Enfant Plaza in downtown Washington, D.C. by taking Metrobus 5A.
What to see in There ?
National Air and Space Museum, Steven F. Udvar-Hazy Center. 14390 Air & Space Museum Pkwy. Chantilly, VA 20151 +1 202 357-2200.  Located near Dulles International Airport, this companion facility of the National Air and Space Museum houses air and spacecraft including an SR-71 "Blackbird" spy plane, a Concorde supersonic jet, and the space shuttle "Discovery". Admission is free. Parking is available for $15/vehicle.