The Morris Arboretum of the University of Pennsylvania (37 ha / 92 acres) is the official arboretum of the Commonwealth of Pennsylvania. It is located at 100 East Northwestern Avenue, Chestnut Hill, Philadelphia, Pennsylvania. The arboretum is open daily except major holidays; an admission fee is charged.(Wikipedia)
"Fernery at Morris Arboretum"
"Morris Arboretum 046"