Located at 859 County Line Road in Horsham, PA 19044

Celebrate Pennsylvania's 343rd Birthday. Picture of William Penn with party noisemaker.

Celebrate Pennsylvania’s 343rd Birthday with Us

The Pennsylvania Historical & Museum Commission (PHMC) will celebrate the Commonwealth’s 343rd birthday on Sunday, March 10, with free admission to many of the historic sites and museums along the Pennsylvania Trails of History and an exhibit of William Penn’s 1681 Charter at the Pennsylvania State Archives. Pennsylvania was created when England’s King Charles II […]


Pennsylvania’s Birthday – Free Open House

Join the Friends of Graeme Park as we celebrate the founding of Pennsylvania with a FREE tour of the Keith House and demonstration of Colonial parlor dances by the Tapestry Historic Dance Ensemble. This annual statewide event commemorates the granting of the Pennsylvania Charter to William Penn and many of the historic sites along the […]