Directions to Liz Johnson's House:
Crossing the American Legion Bridge on the beltway into Virginia, take Exit 44 - Langley/Great Falls; shares the exit ramp with the GW Parkway. Go left at the traffic light off the ramp onto Georgetown Pike. Take a right at the first traffic light onto Balls Hill Road. We are the third street on the left and our house is the third driveway on the right on Warbler. There is plenty of parking on the street.
If you are coming from the Chain Bridge (I'm not sure how traffic is), go right at the traffic light off the bridge and head into McLean on Route 123 (Dolley Madison). Go about 3 miles, passing the GW parkway entrance and the CIA. Take a right at the Old Dominion Drive traffic light. You'll come to a four-way traffic light - bear right onto Balls Hill Road and then Warbler is the 5th street on the right after Churchill.
The same directions above work if you're taking the GW Parkway.