wrote that "in its inception and its working out, it has been unique, not only in my own experience, but I believe in the architectural history of the last 400 years." See also List of National Historic Landmarks in Pennsylvania National Register of Historic Places listings in Montgomery County, Pennsylvania References External links Bryn Athyn Historic District Historic districts on the National Register of Historic Places in Pennsylvania Historic districts in Montgomery County, Pennsylvania National Register of Historic Places in Montgomery County, Pennsylvania National Historic Landmarks in Pennsylvania Bryn Athyn, Pennsylvania