At least three times a month I like to walk the trails at John Heinz National Wildlife Refuge which is close by, basically near the PHL airport and perfect for my new hobby – bird watching ie photographing. They have a visitor center where you can see exhibits to introduce yourself and kids to nature, and what you might expect to see in the wildlife refuge, and it’s free.
America’s First Urban Refuge was established in 1972 for the purpose of preserving, restoring, and developing the natural area known as Tinicum Marsh and promoting environmental education. They have a calendar of events for activities, talks and nature walks. (Website) Fishing with a permit is also permitted.
There are two parking lots, one off of Lindbergh Blvd, which is paved and plentiful, and another off of Rt. 420 which is gravel and limited. Sunday I went to Rt. 420, which has great bike riding trails as well as rustic trails, and has several fishing spots. I suggest a family, or for self discovery to go to the 8601 Lindbergh Blvd., Phila entrance that is where the Visitor Center is located and is easiest to walk. There’s more people on that side.