From the Philadelphia area:

Follow I-76 W. 15.5 miles
Take the US-202 S / US-202 N / US-422 W exit- EXIT 328B-A- toward WEST CHESTER / KING OF PRUSSIA / POTTSTOWN / SWEDESFORD RD. 0.4 miles

Merge onto COUNTY LINE EXPY / US-422 W via EXIT 328A toward POTTSTOWN / SWEDESFORD RD. 2.6 miles

Merge onto W VALLEY FORGE RD / PA-23 W toward VALLEY FORGE. 0.2 miles

Turn RIGHT onto N GULPH RD / PA-23 / PA-363. Continue to follow PA-23. 2.8 miles through Valley Forge Park           

       Turn left onto Davis Road and  turn into the second driveway on your left. 

End at 1 Davis road, Suite 245