Plenty of history in Phoenixville! Location. 40° 8.132′ N, 75° 31.039′ W. Marker is in Phoenixville, Pennsylvania, in Chester County. The marker is located along the Schuylkill River Trail across from the historic Phoenixville Foundry Building. @appliedvideotechnology Applied Video Technology Borough of Phoenixville @pxvchamber @phoenixvilledaily @phoenixvillesocial Phoenixville Public Library @phoenixvillefoundry Phoenixville Foundry @schuylkillrivertrail | Voxipop