Philadelphia Society for the Preservation of Landmarks/Grumblethorpe Historic House and Garden

The Philadelphia Society for the Preservation of Landmarks is an 87 year old non-profit that is dedicated to maintaining and preserving its four historic house museums: the Powel House, Grumblethorpe Historic House and Garden, Hill-Physick House and Historic Waynesborough.
The Philadelphia Society for the Preservation of Landmarks is an 87 year old non-profit that is dedicated to maintaining and preserving its four historic house museums: the Powel House, Grumblethorpe Historic House and Garden, Hill-Physick House and Historic Waynesborough.